Anners Lerdal

• Johansen Skogestad, Ingrid; Kirkevold, Marit; Larsson, Petra; Borge, Christine Råheim; Indredavik, Bent; Gay, Caryl & Lerdal, Anners (2021). Post-stroke fatigue: an exploratory study with patients and health professionals to develop a patient-reported outcome measure. Journal of Patient-Reported Outcomes.  ISSN 2509-8020.  5(35) . doi: 10.1186/s41687-021-00307-z Full text in Research Archive.
• Monsen, Ragnhild Elisabeth; Herlofson, Bente Brokstad; Gay, Caryl; Fjeld, Katrine Gahre; Hove, Lene Hystad; Malterud, Karl Egil; Saghaug, Elisabeth; Slaaen, Joran; Sundal, Tone; Tollisen, Anita & Lerdal, Anners (2021). A mouth rinse based on a tea solution of Salvia officinalis for oral discomfort in palliative cancer care: A randomized controlled trial. Supportive Care in Cancer.  ISSN 0941-4355. . doi: 10.1007/s00520-021-06021-2 Full text in Research Archive. Show summary

  Background: Few clinical studies evaluate interventions to reduce oral discomfort among patients in palliative care. Aim: This study examines the efficacy of a Salvia officinalis (SO) based herbal mouth rinse compared to conventional normal saline (NS) in order to improve oral health. Design: A block-randomized controlled trial. Data were collected before and after a 4-day intervention with either SO (n=44) or NS (n=44). Numerical rating scales (NRS, 0-10) and 12 items from the European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire-Oral Health 17 (EORTC QLQ-OH17) measured patient-reported oral symptoms. An oral examination was performed before and after the intervention. Setting/participants: This study included adult patients with late-stage cancer in an inpatient hospice unit. Results: Of the 88 patients included (mean age=63.9 years, SD=10.6), 73 (83%) completed the study. At baseline, 78% reported dry mouth on the EORTC QLQ-OH17, and 80% rated dry mouth ≥4 on the NRS. Total oral health scores based on the 12 EORTC QLQ-OH17 items improved similarly in both groups (p

• Aouizerat, Bradley E.; Byun, Eeeseung; Pullinger, Clive R.; Gay, Caryl; Lerdal, Anners & Lee, Kathryn A. (2020). Sleep Disruption and Duration are Associated with Variants in Genes Involved in Energy Homeostasis in Adults with HIV/AIDS. Sleep Medicine.  ISSN 1389-9457.  82, s 84- 95 . doi: 10.1016/j.sleep.2020.08.028 Full text in Research Archive.
• Bonsaksen, Tore; Heir, Trond; Skogstad, Laila; Grimholt, Tine K.; Ekeberg, Øivind; Lerdal, Anners & Bredal, Inger Schou (2020). Daily use of alcohol in the Norwegian general population: Prevalence and associated factors. Drugs and alcohol today.  ISSN 1745-9265. . doi: 10.1108/DAT-02-2020-0010 Full text in Research Archive.
• Bonsaksen, Tore; Skogstad, Laila; Grimholt, Tine Kristin; Heir, Trond; Ekeberg, Øivind; Lerdal, Anners & Bredal, Inger Schou (2020). Substance use in the Norwegian general population: Prevalence and associations with disease. Journal of Substance Use.  ISSN 1465-9891. . doi: 10.1080/14659891.2020.1784303 Full text in Research Archive.
• Bragstad, Line Kildal; Lerdal, Anners Vetle; Gay, Caryl L.; Kirkevold, Marit; Lee, Kathryn A.; Lindberg, Maren Falch; Skogestad, Ingrid Johansen; Hjelle, Ellen Gabrielsen; Sveen, Unni & Kottorp, Anders (2020). Psychometric properties of a short version of Lee Fatigue Scale used as a generic PROM in persons with stroke or osteoarthritis: assessment using a Rasch analysis approach. Health and Quality of Life Outcomes.  ISSN 1477-7525.  18, s 1- 8 . doi: 10.1186/s12955-020-01419-8 Full text in Research Archive.
• Bredal, Inger Schou; Bonsaksen, Tore; Ekeberg, Øivind; Skogstad, Laila; Grimholt, Tine Kristin; Lerdal, Anners & Heir, Trond (2020). Sexual assault and the association with health, quality of life and self-efficacy in the general Norwegian population. Journal of Interpersonal Violence.  ISSN 0886-2605. . doi: 10.1177/0886260520926307 Full text in Research Archive.
• Enbakom, Mestawet Getachew; Lerdal, Anners; Småstuen, Milada Cvancarova; Gay, Caryl; Aamodt, Arild; Tesfaye, Million & Lindberg, Maren Falch (2020). High levels of preoperative pain and fatigue are red flags for moderate‐severe pain 12 months after total knee arthroplasty—A longitudinal cohort study. Musculoskeletal Care.  ISSN 1478-2189.  s 1- 7 . doi: 10.1002/msc.1522 Full text in Research Archive. Show summary

  Background: Moderate/severe pain after total knee arthroplasty (TKA) is a poor surgical outcome. Many studies have identified preoperative risk factors of painafter TKA, but studies of the joint contributions of co-occurring symptoms arelacking. Methods: Patients undergoing primary TKA (n=202) were enrolled in a longitu-dinal cohort study. Preoperatively, patients completed questionnaires measuring demographics and symptoms (pain, fatigue, sleep problems and depression). Painwas re-assessed 12 months after TKA. Logistic regression analysis was used to compute the probabilities of moderate-severe pain at 12 months based on preoperative symptom levels, and results were combined into a risk matrix. Results: More than one-third (40%) of patients (n=187) reported moderate-severepain after TKA. Among preoperative risk factors included in the logistic regressionanalyses were age, sex, pain, fatigue, sleep problems and depression. Adjusting forpossible confounders, fatigue (p=0.02) and pain (p=0.01) were significant riskfactors for moderate-severe pain at 12-months follow-up and were retained in the final risk matrix. The co-occurrence of high-preoperative fatigue and pain scores resulted in 57% estimated probability of moderate-severe pain at 12 months.Similarly, the co-occurrence of low-preoperative fatigue and pain scores resulted in14% estimated probability of moderate-severe pain 12 months after TKA. Conclusion: The combination of high fatigue and pain scores prior to surgery was akey risk factor for moderate-severe pain 12 months after TKA. Mapping of these factors could be used preoperatively to identify patients who are at risk to expe-rience a poor outcome of TKA.

• Gamboa, Danil; Jørgenrud, Benedicte Marie; Bryun, Evgeny A.; Vindenes, Vigdis; Koshkina, Evgenya A.; Nadezhdin, Aleksei V.; Kabashi, Saranda; Tetenova, Elena J.; Berg, Thomas; Nyman, Anna Armika Tussilago; Kolgashkin, Alexey J.; Petukhov, Aleksei E.; Perekhodov, Sergey N.; Davydova, Elena N.; Lerdal, Anners; Nordby, Gudmund & Bogstrand, Stig Tore (2020). Prevalence of psychoactive substance use among acutely hospitalised patients in Oslo and Moscow: a cross-sectional, observational study. BMJ Open.  ISSN 2044-6055.  10:e032572(9), s 1- 15 . doi: 10.1136/bmjopen-2019-032572 Full text in Research Archive.
• Kjeverud, Anita; Østlie, Kristin; Schanke, Anne-Kristine; Gay, Caryl; Thoresen, Magne & Lerdal, Anners (2020). Trajectories of fatigue among stroke patients from the acute phase to 18 months post-injury: A latent class analysis. PLOS ONE.  ISSN 1932-6203.  15(4), s 1- 14 . doi: 10.1371/journal.pone.0231709 Full text in Research Archive. Show summary

  Using GMM, three latent classes of fatigue trajectories over 18 months were identified, characterized by differing levels of fatigue: low, moderate and high. The mean FSS score for each class remained relatively stable across all four time points. In the univariate analyses, age

• Lindberg, Maren Falch; Miaskowski, Christine; Rustøen, Tone; Cooper, Bruce A.; Aamodt, Arild & Lerdal, Anners (2020). Preoperative risk factors associated with chronic pain profiles following total knee arthroplasty. European Journal of Pain.  ISSN 1090-3801.  s 1- 13 . doi: 10.1002/ejp.1703 Full text in Research Archive.
• Lindberg, Maren Falch; Schweitz, Turid Undebakke; Aamodt, Arild; Gay, Caryl & Lerdal, Anners (2020). High pre- and postoperative symptom burden in non-responders to total knee arthroplasty. PLOS ONE.  ISSN 1932-6203.  15(5)(5), s 1- 14 . doi: 10.1371/journal.pone.0233347 Show summary

  Objectives One in five patients does not improve in pain with walking (non-responders) 12 months after total knee arthroplasty (TKA). This longitudinal study investigated a broad range of symptoms before and after TKA and evaluated possible differences in symptom distress between responders and non-responders with regards to pain with walking after TKA. Methods Prior to TKA surgery, 182 patients completed a demographic questionnaire and the Memorial Symptom Assessment Scale—Short Form (MSAS-SF). The MSAS-SF was repeated 12 months following TKA. Clinical data were extracted from medical records. Patients were categorized as responders or non-responders based on their trajectories of pain with walking assessed prior to surgery, on postoperative day 4, at 6 weeks, and at 3 and 12 months. Results Overall, the most distressful preoperative symptoms were pain, lack of energy, difficulty sleeping, feeling drowsy, worrying, feeling bloated, and problems with sexual interest or activity. However, compared with patients classified as responders to TKA, non-responders had higher total symptom distress scores both preoperatively and 12 months postoperatively. Preoperatively, non-responders scored higher than responders on five of the seven most distressing symptoms (i.e., all except difficulty sleeping and feeling bloated), and 12 months postoperatively, non-responders scored higher than responders on six of the seven most distressing symptoms (i.e., all but feeling bloated). In a multivariate analysis, higher preoperative distress scores for pain and problems with sexual interest or activity were significant predictors of non-response to TKA, controlling for other relevant factors. Conclusions Patients’ preoperative symptom burden may be a useful indicator of their risk for nonimprovement following TKA surgery. Future studies need to evaluate the effect of reducing patients’ preoperative symptom burden on TKA outcomes

• Olsen, Unni Solveig Johansen; Lindberg, Maren Falch; Denison, Eva Marie-Louise; Rose, Christopher James; Gay, Caryl; Aamodt, Arild; Brox, Jens Ivar; Skare, Øystein; Furnes, Ove; Lee, Kathryn A & Lerdal, Anners (2020). Predictors of chronic pain and level of physical function in total knee arthroplasty: a protocol for a systematic review and meta-analysis. BMJ Open.  ISSN 2044-6055.  10, s 1- 9 . doi: 10.1136/bmjopen-2020-037674 Full text in Research Archive. Show summary

  Abstract Introduction One in five patients undergoing total knee arthroplasty (TKA) experience unchanged or worse pain and physical function 1 year after surgery. Identifying risk factors for unfavourable outcomes is necessary to develop tailored interventions to minimise risk. There is a need to review more current literature with updated methodology that addresses the limitations of earlier systematic reviews and meta-analyses. We present a Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols compliant protocol for a systematic review and meta-analysis of predictors of chronic pain and impaired function after TKA. Methods and analysis This review will include prospective longitudinal observational studies, or randomised trials (including cluster and crossover designs) that report arm-wise predictors of chronic postsurgical pain or impaired physical function at 3 months, 6 months or 12 months. A comprehensive literature search of studies published between 2000 and 2019 will be performed in Medline, Embase, CINAHL, Cochrane Library and PEDro. Blinded assessment with consensus agreement will be applied for inclusion of studies, data extraction and assessment of bias risk (Quality in Prognosis Studies tool). The co-primary outcomes, pain and impaired function, at 12 months after TKA will be analysed separately. Estimates of association between each outcome and any preoperative or intraoperative factor that may predict chronic pain or impaired physical function will be extracted from the included studies, where possible. For randomised studies, results will only be extracted from TKA arms (or the first period of crossover trials). Estimates of association from the primary evidence will be synthesised narratively, and quantitatively using multivariate meta-analysis to provide ‘pooled’ estimates of association. Subgroup and sensitivity analyses will be performed. Certainty of evidence for each predictor will be derived from the Grading of Recommendations Assessment, Development and Evaluation framework. Ethics and dissemination No ethical issues are associated with this project. The results from this review will be published in peer-reviewed journals and presented at international conferences.

• Rehman, Yasser; Lindberg, Maren Falch; Arnljot, Kristine; Gay, Caryl; Lerdal, Anners & Aamodt, Arild (2020). More severe radiographic osteoarthritis is associated with increased improvements in patients' health state following a total knee arthroplasty. Journal of Arthroplasty.  ISSN 0883-5403.  35(11) . doi: 10.1016/j.arth.2020.06.025 Full text in Research Archive. Show summary

  Background To assess whether preoperative radiological severity of osteoarthritis (OA) is related to the level of improvement in patients’ health state measured 1 year after total knee arthroplasty (TKA). Methods Radiographic severity of OA was graded using the Kellgren-Lawrence (KL) classification. Two independent observers were blinded to patients’ outcome scores. Health-related quality of life was measured using EQ-5D-3L preoperatively and at 12-month follow-up. The 5 dimensions of the EQ-5D were converted into a health state index score. The association between KL grade and improvement in health state score was analyzed using multiple linear regression. Results Among 156 consecutive patients (68% females, mean age 69 years) who underwent primary TKA, 3 knees (2%) were classified as KL grade 2, 115 as KL grade 3 (74%), and 38 as KL grade 4 (24%). Follow-up rate was 77%. There was substantial intra-rater and inter-rater agreement (Cohen’s kappa = 0.80 and 0.79). Most patients (64%) had clinically significant improvement in their health state score 1 year after TKA. However, after adjusting for relevant covariates, patients with severe OA (KL grade 4) were found to have significantly more improvement in their health state score than patients with mild or moderate OA (KL grade 2 or 3, respectively). Separate analysis of the 5 EQ-5D dimensions showed that the KL group differences were most evident in the “usual activities” and “pain/discomfort” dimensions. Conclusion Patients with severe OA have significantly more improvement in their usual activities and pain/discomfort 1 year after TKA than patients with less severe OA.

• Aarnes, Rannveig; Stubberud, Jan & Lerdal, Anners (2019). A literature review of factors associated with fatigue after stroke and a proposal for a framework for clinical utility. Neuropsychological Rehabilitation.  ISSN 0960-2011.  s 1- 28 . doi: 10.1080/09602011.2019.1589530
• Bjelland, Bente; Fagermoen, May Solveig; Lerdal, Anners & Bonsaksen, Tore (2019). Økt motivasjon for fysisk aktivitet blant personer med sykelig overvekt ett år etter deltakelse på lærings- og mestringskurs. Ergoterapeuten.  ISSN 0800-3475.  62(2), s 40- 50 Full text in Research Archive.
• Bonsaksen, Tore; Ekeberg, Øivind; Skogstad, Laila; Heir, Trond; Grimholt, Tine Kristin; Lerdal, Anners & Bredal, Inger Schou (2019). Self-rated global health in the Norwegian general population. Health and Quality of Life Outcomes.  ISSN 1477-7525.  17(1) . doi: 10.1186/s12955-019-1258-y Full text in Research Archive.
• Bonsaksen, Tore; Heir, Trond; Ekeberg, Øivind; Grimholt, Tine Kristin; Lerdal, Anners; Skogstad, Laila & Bredal, Inger Schou (2019). Self-evaluated anxiety in the Norwegian population: Prevalence and associated factors. Archives of Public Health.  ISSN 0778-7367.  77(10) . doi: 10.1186/s13690-019-0338-0 Full text in Research Archive.
• Bredal, Inger Schou; Bonsaksen, Tore; Heir, Trond; Skogstad, Laila; Lerdal, Anners; Grimholt, Tine Kristin & Ekeberg, Øivind (2019). Optimists report fewer physical and mental health conditions than pessimists in the general Norwegian population. Health Psychology Report.  ISSN 2353-4184.  7(1), s 9- 18 . doi: 10.5114/hpr.2019.81003 Full text in Research Archive.
• Grimholt, Tine Kristin; Bonsaksen, Tore; Bredal, Inger Schou; Heir, Trond; Lerdal, Anners; Skogstad, Laila & Ekeberg, Øivind (2019). Flight anxiety reported from 1986 to 2015. Aerospace Medicine and Human Performance.  ISSN 2375-6314.  90(4), s 384- 388 . doi: 10.3357/AMHP.5125.2019
• Heir, Trond; Bonsaksen, Tore; Grimholt, Tine Kristin; Ekeberg, Øivind; Skogstad, Laila; Lerdal, Anners & Bredal, Inger Schou (2019). Serious life events and post-traumatic stress disorder in the Norwegian population. BJPsych Open.  ISSN 2056-4724.  5(e82), s 1- 7 . doi: 10.1192/bjo.2019.62 Full text in Research Archive.
• Hugøy, Therese; Lerdal, Anners; Rustøen, Tone & Oksholm, Trine (2019). Predicting postoperative fatigue in surgically treated lung cancer patients in Norway: a longitudinal 5-month followup study. BMJ Open.  ISSN 2044-6055.  9(9), s 1- 9 . doi: 10.1136/bmjopen-2018-028192 Full text in Research Archive.
• Kabashi, Saranda; Vindenes, Vigdis; Bryun, Eugeniy Alekseevich; Koshkina, Evgenia A.; Nadezhdin, Alexey V.; Tetenova, Elena J.; Kolgashkin, Alexey J.; Petukhov, Alexey E.; Perekhodov, S.N.; Davydova, Erna; Hilberg, Thor; Lerdal, Anners; Nordby, Gudmund; Zhang, Chi; Bogstrand, Stig Tore & Gamboa, Danil (2019). Harmful alcohol use among acutely ill hospitalized medical patients in Oslo and Moscow: A cross-sectional study. Drug and Alcohol Dependence.  ISSN 0376-8716.  204:107588, s 1- 9 . doi: 10.1016/j.drugalcdep.2019.107588 Full text in Research Archive.
• Lerdal, Anners; Hofoss, Dag; Gay, Caryl & Fagermoen, May Solveig (2019). Perception of illness among patients with heart failure is related to their general health independently of their mood and functional capacity. Journal of Patient-Reported Outcomes.  ISSN 2509-8020.  3:55, s 1- 7 . doi: 10.1186/s41687-019-0142-1 Full text in Research Archive. Show summary

  Abstract PURPOSE: To explore the relationship between illness perceptions and self-reported general health of patients with chronic heart disease, using some core elements from the Common Sense Model. METHODS: Patients with heart failure (New York Heart Association [NYHA] Functional Class I-III) from five outpatient clinics in Eastern Norway were invited to participate in this cross-sectional study. Two research nurses collected socio-demographic data (age, sex, education and work status) and standardized questionnaires in structured interviews. Patients' self-reported general health was measured with the Euro-Qual Visual Analogue Scale (EQ-VAS), illness perceptions were measured with the 8-item Brief Illness Perception Questionnaire (BIPQ), and mood was assessed using the Hospital Anxiety and Depression Scale. RESULTS: Among the 220 patients who were recruited into this study (98% response rate), the mean age was 67.5 years (SD ± 12.5), and 65.9% were men. Patients were classified as NYHA Class I (8.7% with no activity limitations), Class II (47.6% with slight limitations), or Class III (43.8% with marked limitations). Mean EQ-VAS score was 58.8 (SD ± 21.0). Three of the eight perception of illness items (consequences, personal control and identity) were associated with the patients' general health rating, controlling for their NYHA Class, mood and other BIPQ items. CONCLUSIONS: Our findings suggest that patients' perceptions of their illness have an independent and substantial relationship to the self-rated general health of patients with chronic heart failure. Peoples' illness perceptions are beliefs that have been shown to be modifiable in clinical interventions. Thus, targeted interventions aimed to modify these, such as patient education courses, ought to be developed and tested, as they may be helpful for improving perceived health status.

• Skogestad, Ingrid Johansen; Kirkevold, Marit; Indredavik, Bent; Gay, Caryl & Lerdal, Anners Vetle (2019). Lack of content overlap and essential dimensions – A review of measures used for post-stroke fatigue. Journal of Psychosomatic Research.  ISSN 0022-3999.  124 . doi: 10.1016/j.jpsychores.2019.109759 Full text in Research Archive.
• Stubberud, Jan; Edvardsen, Espen Madsen; Schanke, Anne-Kristine; Lerdal, Anners; Kjeverud, Anita; Schillinger, Andreas & Løvstad, Marianne (2019). Description of a multifaceted intervention programme for fatigue after acquired brain injury: a pilot study. Neuropsychological Rehabilitation.  ISSN 0960-2011.  29(6), s 946- 968 . doi: 10.1080/09602011.2017.1344132 Show summary

  ABSTRACT The purpose of this pilot study was to describe and explore a group-based multifaceted intervention for patients with fatigue after acquired brain injury (ABI). We hypothesised that post-intervention changes would result in reduced fatigue, in addition to improved emotional health, sleep and attentional control. Eight subjects with traumatic brain injury (n = 3) and cerebrovascular insults (n = 5) were included. Inclusion was based upon the presence of fatigue complaints. The participants received 36 hours of intervention. Changes related to fatigue, emotional health and sleep was assessed with self-rating measures. Additionally, a neuropsychological test (Conners’ Continuous Performance Test II) was included as a measure of attentional control. All subjects were assessed at baseline, post-intervention, and at 3 and 9 months follow-up. Findings indicated reduced fatigue levels (post-intervention and 3 months follow-up), anxiety (9 months follow-up), and daytime sleepiness (3 and 9 months follow-up). Pilot results suggest that multifaceted group-based interventions may have the potential to alleviate symptoms of fatigue, anxiety and sleepiness after ABI. At an individual level, a low load of psychological distress, insomnia symptoms, dysexecutive symptoms, in addition to a strong sense of self-efficacy, may be central in order to reduce levels of fatigue. KEYWORDS: Fatigue, cognitive rehabilitation, brain injury, goal management, self-efficacy

• Tollisen, Anita; Flatø, Berit; Selvaag, Anne Marit G; Aasland, Astrid; Ingebrigtsen, Trude; Sagen, Joakim & Lerdal, Anners Vetle (2019). Treatment Satisfaction with and Adherence to Disease-Modifying Antirheumatic Drugs in Adult Patients with Juvenile Idiopathic Arthritis.. Arthritis care & research.  ISSN 2151-464X. . doi: 10.1002/acr.24113
• Tollisen, Anita; Selvaag, Anne Marit G; Aasland, Astrid; Lerdal, Anners & Flatø, Berit (2019). Longitudinal Health Status from Early Disease to Adulthood and Associated Prognostic Factors in Juvenile Idiopathic Arthritis.. Journal of Rheumatology.  ISSN 0315-162X.  46(10), s 1335- 1344 . doi: 10.3899/jrheum.180948
• Bonsaksen, Tore; Grimholt, Tine Kristin; Skogstad, Laila; Lerdal, Anners; Ekeberg, Øivind; Heir, Trond & Bredal, Inger Schou (2018). Self-diagnosed depression in the Norwegian general population - associations with neuroticism, extraversion, optimism, and general self-efficacy. BMC Public Health.  ISSN 1471-2458.  18(1076) . doi: 10.1186/s12889-018-5990-8 Full text in Research Archive.
• Bonsaksen, Tore; Lerdal, Anners; Heir, Trond; Ekeberg, Øivind; Skogstad, Laila; Grimholt, Tine Kristin & Bredal, Inger Schou (2018). General self-efficacy in the Norwegian population: Differences and similarities between sociodemographic groups. Scandinavian Journal of Public Health.  ISSN 1403-4948. . doi: 10.1177/1403494818756701
• Børsting, Tove; Tvedt, Christine Raaen; Johansen Skogestad, Ingrid; Granheim, Tove Irene; Gay, Caryl & Lerdal, Anners (2018). Prevalence of pressure ulcer and associated risk factors in middle- and older-aged medical inpatients in Norway. Journal of Clinical Nursing (JCN).  ISSN 0962-1067.  27(3-4), s e535- e543 . doi: 10.1111/jocn.14088 Full text in Research Archive.
• Cumming, Toby B.; Yeo, Ai Beng; Jodie, Marquez; Churilov, Leonid; Annoni, Jean-Marie; Badaru, Umaru; Ghotbi, Nastaran; Harbison, Joe; Kwakkel, Gert; Lerdal, Anners; Mills, Roger; Næss, Halvor; Nyland, Harald Inge; Schmid, Arlene; Tang, Wai Kwong; Tseng, Benjamin; van de Port, Ingrid G.L.; Mead, Gillian & English, Coralie (2018). Investigating post-stroke fatigue: An individual participant data meta-analysis. Journal of Psychosomatic Research.  ISSN 0022-3999.  113, s 107- 112 . doi: 10.1016/j.jpsychores.2018.08.006
• Larsson, Petra; Borge, Christine Råheim; Nygren-Bonnier, Malin; Lerdal, Anners & Edvardsen, Anne (2018). An evaluation of the short physical performance battery following pulmonary rehabilitation in patients with chronic obstructive pulmonary disease. BMC Research Notes.  ISSN 1756-0500.  11(348) . doi: 10.1186/s13104-018-3458-7
• Lerdal, Anners; Sigurdsen, Line Wangsvik; Hammerstad, Heidi Irene; Granheim, Tove Irene & Gay, Caryl (2018). Associations between patient symptoms and falls in an acute care hospital: A cross-sectional study. Journal of Clinical Nursing (JCN).  ISSN 0962-1067.  27(9-10), s 1826- 1835 . doi: 10.1111/jocn.14364
• Rustøen, Tone; Lerdal, Anners; Gay, Caryl & Kottorp, Anders (2018). Rasch analysis of the Herth Hope Index in cancer patients. Health and Quality of Life Outcomes.  ISSN 1477-7525.  16:196, s 1- 10 . doi: 10.1186/s12955-018-1025-5 Full text in Research Archive.
• Solheim, Jorunn; Gay, Caryl; Lerdal, Anners; Hickson, Louise & Kvaerner, Kari Jorunn (2018). An evaluation of motivational interviewing for increasing hearing aid use: A pilot study. Journal of american academy of audiology.  ISSN 1050-0545.  29(8), s 696- 705 . doi: 10.3766/jaaa.16184
• Steindal, Simen Alexander; Torheim, Henny; Oksholm, Trine; Christensen, Vivi Lycke; Lee, Kathryn A; Lerdal, Anners; Markussen, Heidi Øksnes; Gran, Gerd; Leine, Marit & Borge, Christine Råheim (2018). The effectiveness of nursing interventions for breathlessness in people with chronic obstructive pulmonary disease: A systematic review and meta-analysis. Journal of Advanced Nursing.  ISSN 0309-2402. . doi: 10.1111/jan.13902 Full text in Research Archive.
• Alhaug, Johanne; Gay, Caryl; Henriksen, Christine & Lerdal, Anners (2017). Pressure ulcer is associated with malnutrition as assessed by Nutritional Risk Screening (NRS 2002) in a mixed hospital population. Food & Nutrition Research.  ISSN 1654-6628.  61 . doi: 10.1080/16546628.2017.1324230 Full text in Research Archive.
• Bredal, Inger Schou; Heir, Trond; Skogstad, Laila; Bonsaksen, Tore; Lerdal, Anners; Grimholt, Tine Kristin & Ekeberg, Øivind (2017). Population-based norms of the Life Orientation Test–Revised (LOT-R). International Journal of Clinical and Health Psychology.  ISSN 1697-2600.  17(3), s 216- 224 . doi: 10.1016/j.ijchp.2017.07.005 Full text in Research Archive.
• Kornilov, Nikolai; Lindberg, Maren Falch; Gay, Caryl; Saraev, Alexander; Kuliaba, Taras; Rosseland, Leiv Arne & Lerdal, Anners (2017). Higher physical activity and lower pain levels before surgery predict non-improvement of knee pain 1 year after TKA. Knee Surgery, Sports Traumatology, Arthroscopy.  ISSN 0942-2056.  26(6), s 1698- 1708 . doi: 10.1007/s00167-017-4713-5
• Lerdal, Anners & Gay, Caryl (2017). Acute-Phase Fatigue Predicts Limitations with Activities of Daily Living 18 Months after First-Ever Stroke. Journal of Stroke & Cerebrovascular Diseases.  ISSN 1052-3057.  26(3), s 523- 531 . doi: 10.1016/j.jstrokecerebrovasdis.2016.11.130 Show summary

  Introduction: Fatigue during the acute phase following stroke has been shown to predict long-term physical health, specifically increased bodily pain and poorer self-rated general health. The aim of this analysis was to determine whether acute phase fatigue also predicts patients’ level of functioning with respect to activities of daily living (ADL) 18 months after first stroke. Methods: Patients with first-ever stroke (n=88) were recruited upon admission at two hospitals in Norway. Patients were assessed within 2 weeks following admission and at 18 months using the Barthel Index of Activities of Daily Living (BI), Fatigue Severity Scale, and Beck Depression Inventory II. The relationship between acute-phase fatigue and later ADL impairment (BI<20) was evaluated using multivariate logistic regression analysis controlling for relevant covariates and acute-phase ADL functioning. Results: Acute-phase fatigue was associated with ADL impairment at 18-month follow-up (p=.006), even when controlling for other predictors of ADL functioning, including age, gender, baseline work status, and acute-phase depressive symptoms and ADL function. Examining the reverse relationship, acute-phase ADL function was unrelated to fatigue 18 months after stroke. Conclusions: Our study indicates that acute-phase fatigue may be an independent risk factor for ADL impairment 18 months after stroke. The finding indicates that effective treatments for post-stroke fatigue both in the acute-phase and later in the recovery period may contribute to better stroke rehabilitation.

• Lerdal, Anners; Gay, Caryl; Bonsaksen, Tore & Fagermoen, May Solveig (2017). Predictors of physical and mental health in persons with morbid obesity attending a patient education course - a two-year follow-up study. Health and Quality of Life Outcomes.  ISSN 1477-7525.  15(1) . doi: 10.1186/s12955-017-0675-z Full text in Research Archive.
• Lerdal, Anners; Opheim, Randi; Gay, Caryl; Moum, Bjørn; Fagermoen, May Solveig & Kottorp, Anders (2017). Psychometric limitations of the 13-item Sense of Coherence Scale assessed by Rasch analysis. BMC Psychology.  ISSN 2050-7283.  5(18) . doi: 10.1186/s40359-017-0187-y
• Lindberg, Maren Falch; Rustøen, Tone; Christine, Miaskowski; Rosseland, Leiv Arne & Lerdal, Anners (2017). The relationship between pain with walking and self-rated health 12 months following total knee arthroplasty: a longitudinal study. BMC Musculoskeletal Disorders.  ISSN 1471-2474.  18(1) . doi: 10.1186/s12891-017-1430-7 Full text in Research Archive.
• Saraev, Alexander; Lindberg, Maren Falch; Gay, Caryl; Rosseland, Leiv Arne; Lerdal, Anners; Kornilov, Nikolai & Kulyaba, Taras A. (2017). What influence on early postopeartive pain intensity after total knee arthroplasty?. Travmatologiya i Ortopediya Rossii.  ISSN 2311-2905.  23(1), s 46- 58 . doi: 10.21823/2311-2905-2017-23-1-45-58 Full text in Research Archive. Show summary

  Цель исследования. Установить взаимосвязь комплекса социально-демографических, когнитивных, клинических и хирургических факторов с интенсивностью и динамикой болевого синдрома в течение первых трех суток после тотального эндопротезирования коленного сустава. Материал и методы. В исследование было включено 100 больных гонартрозом (93 (93%) женщин и 7 (7%) мужчин), средний возраст которых составил 63,5 ± 7,8 лет, госпитализированных для первичного тотального эндопротезирования коленного сустава. С использованием специализированных тестов перед проведением хирургического вмешательства проведена детализированная оценка различных показателей болевого синдрома, выраженности клинических проявлений гонартроза и функционального состояния коленного сустава, параметров повседневной двигательной активности и качества жизни пациентов, особенностей сопутствующих заболеваний. Результаты. Все анализируемые показатели болевого синдрома прогрессивно уменьшались в течение трех дней после операции (р<.001), в том числе количество ежедневных часов умеренной и сильной боли (р<.001). У женщин болевой синдром был более выражен, чем у мужчин (р=.009). Из проанализированных предоперационных факторов достоверная положительная взаимосвязь была продемонстрирована для уровня тревожности (р=.029), интенсивности болевого синдрома (р=.029) и высокого уровня двигательной активности пациента (р=.012). Среди периоперационных факторов только продолжительность вмешательства более 90 минут коррелировала с интенсивностью боли (р=.008). Характеристики послеоперационного болевого синдрома не зависели от уровня образования пациента, социального или семейного статуса, вида занятости, особенностей образа жизни, а также каких-либо прочих клинических или лабораторных переменных. Вывод. Из многочисленных факторов, которые ассоциированы с уровнем послеоперационного болевого синдрома, только пол, тревожность и более высокий уровень предоперационной боли достоверно подтвердили свою значимость. Среди периоперационных факторов следует выделить продолжительность операции, которая зависела от вида имплантата, и была достоверно ассоциирована с высоким уровнем послеоперационной боли.

• Skogestad, Ingrid Johansen; Martinsen, Liv; Børsting, Tove; Granheim, Tove Irene; Ludvigsen, Eirin Sigurdssøn; Gay, Caryl & Lerdal, Anners (2017). Supplementing the Braden scale for pressure ulcer risk among Medical inpatients: the contribution of self-reported symptoms and standard Laboratory tests. Journal of Clinical Nursing (JCN).  ISSN 0962-1067.  26(1-2), s 202- 214 . doi: 10.1111/jocn.13438
• Tollisen, Anita; Selvaag, Anne Marit G; Aulie, Hanne Aaserud; Lilleby, Vibke; Aasland, Astrid; Lerdal, Anners & Flatø, Berit (2017). Physical functioning, pain, and health-related quality of life in adults with juvenile idiopathic arthritis: a longitudinal 30-year followup study. Arthritis care & research.  ISSN 2151-464X.  70(5), s 741- 749 . doi: 10.1002/acr.23327
• Amlie, Einar Johan Braém; Lerdal, Anners; Gay, Caryl; Høvik, Øystein; Nordsletten, Lars & Dimmen, Sigbjørn (2016). A trend for increased risk of revision surgery due to deep infection following fast-track hip arthroplasty.. Advances in Orthopedics.  ISSN 2090-3464. . doi: 10.1155/2016/7901953 Full text in Research Archive.
• Bonsaksen, Tore; Fagermoen, May Solveig & Lerdal, Anners (2016). Trajectories of physical and mental health among people with morbid obesity and people with COPD: A longitudinal comparative study. Journal of Multidisciplinary Healthcare.  ISSN 1178-2390.  9, s 191- 200 . doi: 10.2147/JMDH.S102630 Full text in Research Archive.
• Bonsaksen, Tore; Lerdal, Anners; Småstuen, Milada C & Fagermoen, May Solveig (2016). Differences and similarities in the trajectories of self-esteem and positive and negative affect in persons with chronic illness: An explorative longitudinal study. Journal of Multidisciplinary Healthcare.  ISSN 1178-2390.  9, s 355- 363 . doi: 10.2147/JMDH.S108891 Full text in Research Archive.
• Byun, Eeeseung; Lerdal, Anners; Gay, Caryl & Lee, Kathryn A (2016). How adult caregiving impacts sleep: a systematic review. Current Sleep Medicine Reports.  ISSN 2198-6401.  2(4), s 191- 205 . doi: 10.1007/s40675-016-0058-8
• Eriksen, Siren; Gay, Caryl & Lerdal, Anners (2016). Acute phase factors associated with the course of depression during the 18 months after first-ever stroke. Disability and Rehabilitation.  ISSN 0963-8288.  38(1), s 30- 35 . doi: 10.3109/09638288.2015.1009181 Show summary

  PURPOSE: The aim of this study was to describe the course of post-stroke depression (PSD) during the first 18 months after first-ever stroke and to examine differences in the course of depressive symptoms in relation to patient demographic and clinical characteristics in the acute phase. METHODS: As part of a longitudinal cohort study, data were collected from medical records and in face-to-face interviews using standardized questionnaires within 15 days after stroke and 6, 12 and 18 months later. The sample consisted of 94 patients with first-ever stroke. PSD was measured with the Beck Depression Inventory II. Repeated measures analysis of variance was used to evaluate the course of depressive symptoms over time and in relation to demographic and clinical variables. RESULTS: Depression levels were stable during the 18 months after first-ever stroke. However, depression scores were significantly higher among patients who had lower physical functioning in the acute phase, were living alone or were not employed at the time of stroke. CONCLUSIONS: Several demographic and acute phase factors were associated with a more severe PSD course following stroke. Psychosocial support that begins in the acute phase and continues throughout the rehabilitation process may be helpful in improving both physical and psychological outcomes following stroke. Implications for Rehabilitation Depression levels are stable during the first 18 months after first-ever stroke. The course of post-stroke depression is related to the level of physical functioning in the acute phase, whether the stroke survivors live alone and their employment status at the time of stroke. Psychological support that begins in the acute phase and continues throughout the rehabilitation process may be helpful in improving both physical and psychological outcomes following stroke.

• Gay, Caryl; Kottorp, Anders; Lerdal, Anners & Lee, Kathryn A. (2016). Psychometric limitations of the center for epidemiologic studies-depression scale for assessing depressive symptoms among adults with HIV/AIDS: A rasch analysis. Depression Research and Treatment.  ISSN 2090-1321.  2016 . doi: 10.1155/2016/2824595 Full text in Research Archive.
• Kornilov, Nikolai; Lindberg, Maren Kristin Falch; Gay, Caryl; Saraev, Alexander; Kuliaba, Taras; Rosseland, Leiv Arne; Konstantin, Muniz & Lerdal, Anners (2016). Factors Related to Postoperative Pain Trajectories following Total Knee Arthroplasty: A Longitudinal Study of Patients Admitted to a Russian Orthopaedic Clinic. Pain research and treatment.  ISSN 2090-1542.  2016 . doi: 10.1155/2016/3710312 Full text in Research Archive.
• Lerdal, Anners; Kottorp, Anders; Gay, Caryl; Aouizerat, Bradley E; Lee, Kathryn A. & Miaskowski, Christine (2016). A Rasch Analysis of Assessments of Morning and Evening Fatigue in Oncology Patients Using the Lee Fatigue Scale. Journal of Pain and Symptom Management.  ISSN 0885-3924.  51(6), s 1002- 1012 . doi: 10.1016/j.jpainsymman.2015.12.331 Show summary

  CONTEXT: To accurately investigate diurnal variations in fatigue, a measure needs to be psychometrically sound and demonstrate stable item function in relationship to time of day. Rasch analysis is a modern psychometric approach that can be used to evaluate these characteristics. OBJECTIVES: To evaluate, using Rasch analysis, the psychometric properties of the Lee Fatigue Scale (LFS) in a sample of oncology patients. METHODS: The sample comprised 587 patients (mean age 57.3±11.9 years, 80% female) undergoing chemotherapy for breast, gastrointestinal, gynecological, or lung cancer. Patients completed the 13-item LFS within 30 minutes of awakening (i.e., morning fatigue) and prior to going to bed (i.e., evening fatigue). Rasch analysis was used to assess validity and reliability. RESULTS: In initial analyses of differential item function, eight of the 13 items functioned differently depending on whether the LFS was completed in the morning or in the evening. Subsequent analyses were conducted separately for the morning and evening fatigue assessments. Nine of the morning fatigue items and 10 of the evening fatigue items demonstrated acceptable goodness-of-fit to the Rasch model. Principal components analyses indicated that both morning and evening assessments demonstrated unidimensionality. Person separation indices indicated that both morning and evening fatigue scales were able to distinguish four distinct strata of fatigue severity. CONCLUSION: Excluding four items from the morning fatigue scale and three items from the evening fatigue scale improved the psychometric properties of the LFS for assessing diurnal variations in fatigue severity in oncology patients.

• Lerdal, Anners; Slåtten, Kari; Saghaug, Elisabeth; Grov, Ellen Karine; Normann, Are Peder; Lee, Kathryn A.; Bjorvatn, Bjørn & Gay, Caryl (2016). Sleep among bereaved caregivers of patients admitted to hospice: a 1-year longitudinal pilot study. BMJ Open.  ISSN 2044-6055.  6(1) . doi: 10.1136/bmjopen-2015-009345 Full text in Research Archive. Show summary

  Abstract Objectives This pilot study aimed to describe the sleep of partners and other family caregivers prior to and in the first year after a hospice patient's death. The study also evaluated the feasibility of the study protocol and determined the effect sizes in preparation for a full-scale study. Design The pilot study used a longitudinal, descriptive and comparative design. Setting and participants Participants included primary family caregivers of patients admitted to a hospice in Oslo, Norway. Primary outcome Caregiver sleep was measured subjectively with the Pittsburgh Sleep Quality Index (PSQI) and objectively using wrist actigraphy for 4 nights and 3 days at three different times: during the hospice stay, and at 6 and 12 months after the patient's death. Results 16 family caregivers (10 partners and 6 other family members) completed the 1-year study protocol. Overall, sleep quality and quantity were stable over time and at each assessment, approximately half of the sample had poor sleep quality, both by self-report and objective measures. However, the sleep trajectories differed significantly over time, with older caregivers (≥65 years) having significantly longer sleep durations than younger caregivers (<65 years). Furthermore, sleep quality also differed over time depending on the caregiver's relationship to the patient, with partner caregivers having significantly worse sleep quality than other family caregivers. Conclusions Caring for a dying family member is known to interfere with sleep, yet little is known about bereaved caregivers. The results of this pilot study demonstrate the feasibility of the longitudinal study protocol and indicate that sleep problems are common for caregivers and continue into the bereavement period, particularly for partner caregivers. The caregiver's relationship to the patient may be an important factor to consider in future studies.

• Lindberg, Maren Falch; Miaskowski, Christine; Rustøen, Tone; Rosseland, Leiv Arne; Cooper, Bruce A. & Lerdal, Anners (2016). Factors that can predict pain with walking, 12 months after total knee arthroplasty: A trajectory analysis of 202 patients. Acta Orthopaedica.  ISSN 1745-3674.  87(6), s 600- 606 . doi: 10.1080/17453674.2016.1237440
• Lindberg, Maren Kristin Falch; Miaskowski, Christine; Rustøen, Tone; Rosseland, Leiv Arne; Cooper, Bruce A. & Lerdal, Anners (2016). Factors that can predict pain with walking, 12 months after total knee arthroplasty - A trajectory analysis of 202 patients. Acta Orthopaedica.  ISSN 1745-3674.  87(6), s 600- 606 . doi: 10.1080/17453674.2016.1237440 Full text in Research Archive. Show summary

  Background and purpose — Functional limitations after total knee arthroplasty (TKA) are common. In this longitudinal study, we wanted to identify subgroups of patients with distinct trajectories of pain-related interference with walking during the first year after TKA and to determine which demographic, clinical, symptom-related, and psychological characteristics were associated with being part of this subgroup. Patients and methods — Patients scheduled for primary TKA for osteoarthritis (n = 202) completed questionnaires that evaluated perception of pain, fatigue, anxiety, depression, and illness on the day before surgery. Clinical characteristics were obtained from the medical records. Interference of pain with walking was assessed preoperatively, on postoperative day 4, and at 6 weeks, 3 months, and 12 months after TKA.

• Lindberg, Maren Kristin Falch; Miaskowski, Christine; Rustøen, Tone; Rosseland, Leiv Arne; Paul, Steven M.; Cooper, Bruce A. & Lerdal, Anners (2016). The Impact of Demographic, Clinical, Symptom and Psychological Characteristics on the Trajectories of Acute Postoperative Pain After Total Knee Arthroplasty. Pain medicine (Malden, Mass.).  ISSN 1526-2375. . doi: 10.1093/pm/pnw080
• Lindberg, Maren Kristin Falch; Miaskowski, Christine; Rustøen, Tone; Rosseland, Leiv Arne; Paul, Steven M. & Lerdal, Anners (2016). Preoperative pain, symptoms, and psychological factors related to higher acute pain trajectories during hospitalization for total knee arthroplasty. PLOS ONE.  ISSN 1932-6203.  11(9) . doi: 10.1371/journal.pone.0161681 Full text in Research Archive. Show summary

  Objectives Unrelieved postoperative pain after total knee arthroplasty (TKA) is a significant problem. This longitudinal study investigated how preoperative pain intensity, as well as a comprehensive list of preoperative and perioperative factors, influenced the severity of acute average and worst pain after TKA. Methods Prior to surgery, 203 patients completed a demographic questionnaire, Lee Fatigue Scale, Fatigue Severity Scale, Hospital Anxiety and Depression Scale, and Brief Illness Perception Questionnaire. Brief Pain Inventory was completed prior to surgery as well as through postoperative days (POD) 0 to 4. Clinical data were extracted from medical records. Results Several factors were associated with higher levels of preoperative and postoperative pain. Lower preoperative average and worst pain intensity scores were associated with increases in average and worst postoperative pain from POD1 to POD4. A higher number of comorbidities, higher C-reactive protein values, and higher pain interference with function were associated with higher preoperative levels of average pain. Older age, higher fatigue levels, and higher scores on identity and emotional responses to osteoarthritis (OA) were associated with higher preoperative levels of worst pain. Lower perceived consequences of OA were associated with higher pain from POD1 to POD4. Males and patients with lower preoperative scores for average pain had higher worst pain following surgery. Discussion Patients at higher risk for more severe postoperative pain can be identified through an assessment of pain and other risk factors identified in this study. Future research needs to test the efficacy of interventions that modify patients’ perceptions of living with OA and pain intensity before surgery on short and long term postoperative outcomes.

• Ludvigsen, Eirin Sigurdssøn; Flæten, Øystein Øygarden; Gay, Caryl; TarAngen, Magnus; Granheim, Tove Irene & Lerdal, Anners (2016). Pain and concomitant symptoms in medical and elective surgical inpatients: a point prevalence survey. Journal of Clinical Nursing (JCN).  ISSN 0962-1067.  25(21-22), s 3229- 3240 . doi: 10.1111/jocn.13346
• Stafseth, Siv Anna Ulla-Britt Karlsson; Grønbeck, Sturle; Lien, Anne Kristine; Randen, Irene & Lerdal, Anners (2016). The experiences of nurses implementing the Modified Early Warning Score and a 24-hour on-call Mobile Intensive Care Nurse: An exploratory study. Intensive & Critical Care Nursing.  ISSN 0964-3397.  34, s 25- 33 . doi: 10.1016/j.iccn.2015.07.008 Show summary

  Aims and objectives To explore experiences of nurses implementing and using the Modified Early Warning Score (MEWS) and a Mobile Intensive Care Nurse (MICN) providing 24-hour on-call nursing support. Background To secure patient safety in hospital wards, nurses may increase the quality of care using a tool to detect the failure of vital functions. Possibilities for support can be provided through on-call supervision from a qualified team or nurse. Design This exploratory qualitative investigation used focus group interviews with nurses from two wards of a university hospital in Norway. Methods A purposive sample of seven registered nurses was interviewed in focus groups. A semi-structured guide and an inductive thematic analysis were used to identify interview themes. Results Three themes emerged: (1) experiences with the early recognition of deterioration using the MEWS, (2) supportive collaboration and knowledge transfer between nurses and (3) a “new” precise language using the score for communicating with physicians. The use of scores and support were perceived as improving care for deteriorating patients and for supporting the collaboration of nurses with other professionals. Conclusion In our study, nurses described increased confidence in the recognition of deteriorating patients and in the management of such situations. The non-critical attitude, supportive communication and interactive learning according to the MICN were essential elements for success. Keywords Clinical deterioration; Critical care; Qualitative research; Vital sign monitoring

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• Lerdal, Anners (2020). Hvordan skrive den gode vitenskapelige artikkelen?. Gyldendal Akademisk.  ISBN 9788205538573.  80 s.

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• Lindberg, Maren Falch; Rustøen, Tone; Cooper, Bruce A; Aamodt, Arild & Lerdal, Anners Vetle (2021). Authors’ reply to the comment by Riddle et al. European Journal of Pain.  ISSN 1090-3801. . doi: 10.1002/ejp.1756
• Gay, Caryl; Berg, Søren; Hansen, Aleksander Grande; Ihle-Hansen, Hege; Johansen Skogestad, Ingrid; Stubberud, Jan; Larsson, Petra & Lerdal, Anners (2020). Fatigue and sleep apnea three months after first-ever stroke.
• Lerdal, Anners (2020). Sleep and fatigue, It's not that simple.
• Rose, Christopher James; Olsen, Unni; Lindberg, Maren Falch; Denison, Eva Marie-Louise; Aamodt, Arild & Lerdal, Anners (2020). A new multivariate meta-analysis model for many variates and few studies. arXiv. 1.
• Victor, Mattias Erik; Lau, Bjørn; Ruud, Torleif & Lerdal, Anners Vetle (2020). Patient characteristics and factors associated with post-treatment work participation in a Norwegian return to work programme for common mental disorders.
• Haukeland-Parker, Stacey Marie; Stafne, Signe Nilssen; Martijn A, Spruit; Lerdal, Anners & Johannessen, Hege Hølmo (2019). Urinary incontinence women with chronic obstructive pulmonary disease.
• Lindberg, Maren Falch; Rognsvåg, Turid; Badawy, Mona; Borchgrevink, Petter Chr.; Furnes, Ove; Gay, Caryl; Holm, Inger; Indrekvam, Kari; Lau, Bjørn; Rustøen, Tone; Skou, Søren T; Aamodt, Arild & Lerdal, Anners (2019). Optimal behandling av artrosepasienter - en feasibilitystudie (MultiKnee trial).
• Monsen, Ragnhild Elisabeth; Herlofson, Bente Brokstad; Gay, Caryl; Dahl, Marianne; Saghaug, Elisabeth; Slaaen, Joran & Lerdal, Anners (2019). Dry mouth - a missing symptom in multiple assessment tools?.
• Monsen, Ragnhild Elisabeth; Herlofson, Bente Brokstad; Gay, Caryl; Fjeld, Katrine Gahre; Hove, Lene Hystad; Saghaug, Elisabeth; Slaaen, Joran; Sundal, Tone; Tollisen, Anita & Lerdal, Anners (2019). A comparison of normal saline mouth rinse and mouth rinse based on Salvia officinalis in palliative care: A randomized controlled trial.
• Bonsaksen, Tore; Fagermoen, May Solveig; Småstuen, Milada C & Lerdal, Anners (2018). Selvfølelse og positive og negative følelser etter pasientopplæring. BestPractice. Lungemedisin.  8(2), s 18- 21
• Haukeland-Parker, Stacey Marie; Stafne, Signe Nilssen; Lerdal, Anners; Spruit, Martijn & Johannessen, Hege Hølmo (2018). Effekt av bekkenbunnstrening og teknikker for å dempe hoste på kvinner med KOLS og urininkontinens – preliminære resultater fra en RCT..
• Kornilov, Nikolai; Lindberg, Maren Falch; Gay, Caryl; Saraev, Alexander; Kuliaba, Taras; Rosseland, Leiv Arne & Lerdal, Anners (2018). Høyere fysisk aktivitetsnivå og mindre preoperative smerter predikerer manglende forbedring etter innsetting av total kneprotese. Revmatologi BestPractice.
• Lindberg, Maren Falch; Aamodt, Arild & Lerdal, Anners (2018). A multidisciplinary intervention in total knee arthroplasty - a multicenter randomized controlled trial in patients on waiting list for TKA (The MULTI-KNEE trial)..
• Lindberg, Maren Falch; Rustøen, Tone; Rosseland, Leiv Arne & Lerdal, Anners (2018). Preoperative prediktorer for smerteforløp og livskvalitet etter kneproteseoperasjon.
• Lindberg, Maren Falch; Rustøen, Tone; Rosseland, Leiv Arne & Lerdal, Anners (2018). Smerter ved gange og selvrapportert helse etter innsatt kneprotese.
• Monsen, Ragnhild Elisabeth; Herlofson, Bente Brokstad; Gay, Caryl; Saghaug, Elisabeth; Tollisen, Anita; Fjeld, Katrine Gahre; Hove, Lene Hystad; Tallang, Oddveig Utheim; Sundal, Tone & Lerdal, Anners (2018). Rekruttering av pasienter til en klinisk intervensjonsstudie i et Hospice.
• Olsen, Unni Solveig Johansen; Lerdal, Anners; Aamodt, Arild; Brox, Jens Ivar; Furnes, Ove; Denison, Eva Marie-Louise; Skare, Øystein & Lindberg, Maren Falch (2018). Preoperative and intraoperative predictors of persistent postoperative pain and impaired physical function in total knee arthroplasty - a systematic review of prognostic studies.
• Rognsvåg, Turid; Lindberg, Maren Falch; Borchgrevink, Petter Chr.; Furnes, Ove; Gay, Caryl; Holm, Inger; Indrekvam, Kari; Lau, Bjørn; Lerdal, Anners; Rustøen, Tone; Skou, Søren Thorgaard; Aamodt, Arild & Badawy, Mona (2018). Multi-Knee Trial. En feasibilty-studie av en intervensjon for artrosepasienter med økt risiko for langvarige smerter etter operasjon med kneprotese.
• Schweitz, Turid Undebakke; Lindberg, Maren Falch; Ludvigsen, Eirin Sigurdssøn & Lerdal, Anners (2018). Preoperative symptomer hos kneprotesepasienter med tilbakevendende smerter ved gange.
• Tollisen, Anita; Selvaag, Anne Marit; Ingebrigtsen, Trude Miljeteig; Aasland, Astrid; Lerdal, Anners & Flatø, Berit (2018). Treatment satisfaction in patients with juvenile idiopathic arthritis.
• Gay, Caryl; Monsen, Ragnhild Elisabeth; Saghaug, Elisabeth; Herlofson, Bente Brokstad; Fjeld, Katrine Gahre; Hove, Lene Hystad; Tollisen, Anita; Sundal, Tone; Tallang, Oddveig Utheim; Slaaen, Joran & Lerdal, Anners (2017). Oral health symptoms that interfere with eating and drinking among hospice patient.
• Lindberg, Maren Falch; Lerdal, Anners; Rustøen, Tone & Rosseland, Leiv Arne (2017). Factors that predict the trajectories of aucte pain, pain with walking, and self-rated health after total knee arthroplasty - a longitudinal study.
• Steindal, Simen Alexander; Oksholm, Trine; Torheim, Henny; Christensen, Vivi Lycke; Lee, Kathryn A; Lerdal, Anners; Markussen, Heidi Øksnes; Gran, Gerd; Leine, Marit & Borge, Christine Råheim (2017). A systematic review of nursing interventions for breathlessness in COPD.
• Steindal, Simen Alexander; Oksholm, Trine; Torheim, Henny; Christensen, Vivi Lycke; Lee, Kathryn; Lerdal, Anners; Markussen, Heidi Øksnes; Gran, Gerd; Leine, Marit & Borge, Christine Råheim (2017). A systematic review of nursing interventions for breathlessness in COPD. European Clinical Respiratory Journal.  ISSN 2001-8525.  50, s PA2582 . doi: DOI: 10.1183/1393003.congress-2017.PA2582
• Alhaug, Johanne; Gay, Caryl; Henriksen, Christine & Lerdal, Anners (2016). Nutritional risk screening (NRS 2002) is associated with pressure ulcer in a hospital population.. Show summary

  Nutritional Risk Screening (NRS 2002) is associated with pressure ulcer in a hospital population Rationale: The objective in this study was to describe the prevalence of pressure ulcer (PU) and risk of malnutrition in a hospital population, in addition to examine whether Nutritional Risk Screening 2002 (NRS 2002) would be associated with the presence of PU in hospitalized patients. Methods: A cross-sectional study was conducted on 10 screening days (2012-2014) in a Norwegian hospital. Including patients (≥18 years) admitted to medical or elective orthopedic surgical wards and excluding patients admitted to Hospice, intensive care unit, cognitively impaired and patients not able to read Norwegian. Initial NRS 2002 and skin examinations were conducted by ward nurses and nursing students, using European Pressure Ulcer Advisory Panel classification (Stage I-IV). A registered clinical dietician conducted all final NRS 2002 screenings. SPSS version 22.0 and p<0.05 was used for all statistical analyses. Results: Study population included 651 patients, with complete NRS 2002 screening data and skin examinations. The NRS 2002 screening identified 34% at risk of malnutrition. PU prevalence was 8% and associated with age ≥70 years, body mass index (BMI) below 20 and hospitalization in the medical department. Both initial and final NRS 2002 revealed higher presence of PU (OR=2.58 and 2.55, respectively) than low nutritional risk. The initial screening items “Is BMI<20?” (OR= 2.73) and “Reduced dietary intake past week?” (OR=1.91) were strongly associated to PU, as was a composite item of “Reduced dietary intake past week OR Weight loss past 3 months”(OR= 2.75). Conclusion: This study shows that NRS 2002 (initial and final screening) was associated with PU in hospitalized patients. Initial screening items were strongly associated with PU and might be used for detecting patients at risk of malnutrition and PU. Conflict of interest: None.

• Bonsaksen, Tore; Fagermoen, May Solveig & Lerdal, Anners (2016). Utviklingsforløpet av fysisk og mental helse etter pasientopplæring for personer med KOLS. BestPractice. Lungemedisin.  6(9), s 9- 11
• Haukeland-Parker, Stacey Marie; Stafne, Signe Nilssen; Lerdal, Anners; Spruit, Martijn & Johannessen, Hege Hølmo (2016). Urinary incontinence amongst women with chronic obstructive pulmonary disease.
• Johnsen, Merete Nossek; Grønbeck, Sturle; Stafseth, Siv Anna Ulla-Britt Karlsson; Randen, Irene; Lien, Tine & Lerdal, Anners (2016). Tryggere med mobil intensivsykepleier. Tidsskriftet sykepleien.  ISSN 0806-7511.  104(2), s 48- 52 . doi: 10.4220/Sykepleiens.2016.56524
• Lerdal, Anners (2016). Innvirkning av utmattelse etter hjerneslag på fysisk funksjon. BestPractice Psykiatri/Nevrologi/Geriatri.  7(28), s 31- 33
• Lerdal, Anners & Gay, Caryl (2016). Acute-phase fatigue predicts increased dependence with activities of daily living amonag patients with first ever stroke - a longitudinal study over 18 months.
• Lien, Tine; Stafseth, Siv Anna Ulla-Britt Karlsson; Grønbeck, Sturle; Randen, Irene; Johnsen, Merete Nossek & Lerdal, Anners (2016). Modified Early Warning Score er nyttig til å identifisere pasienter med begynnende svikt i vitale funksjoner.
• Lindberg, Maren Falch; Kornilov, Nikolai; Saraev, Alexander; Rosseland, Leiv Arne; Rustøen, Tone; Miaskowski, Christine; Cooper, Bruce A. & Lerdal, Anners (2016). Pain trajectories and patient satisfaction after TKA: results of a two-center Russian-Norwegian study.
• Lindberg, Maren Falch; Miaskowski, Christine; Rustøen, Tone; Rosseland, Leiv Arne; Cooper, Bruce A. & Lerdal, Anners (2016). Trajectories of pain with walking after total knee arthroplasty in two subgroups of patients.
• Lindberg, Maren Falch; Miaskowski, Christine; Rustøen, Tone; Rosseland, Leiv Arne; Paul, Steven M.; Cooper, Bruce A. & Lerdal, Anners (2016). Trajectories of pain, interference With function and quality of life after total knee arthroplasty.
• Lindberg, Maren Falch; Rustøen, Tone; Rosseland, Leiv Arne & Lerdal, Anners (2016). Prediktorer for nedsatt gangfunksjon ett år etter innsatt kneprotese – en subgruppeanalyse..
• Lindberg, Maren Falch; Rustøen, Tone; Rosseland, Leiv Arne & Lerdal, Anners (2016). Smertepåvirkning av gangfunksjon gjennom det første året etter innsatt total kneprotese.
• Monsen, Ragnhild Elisabeth; Saghaug, Elisabeth; Herlofson, Bente Brokstad; Fjeld, Katrine Gahre; Hove, Lene Hystad; Tallang, Oddveig Utheim; Tollisen, Anita; Sundal, Tone; Slaaen, Joran & Lerdal, Anners (2016). Munntørrhet hos palliative pasienter - en randomisert kontrollert studie i en hospiceenhet.

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