Svein Friis

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Visiting address Sognsvannsveien 21 Gaustad sykehus 0372 Oslo
Postal address Postboks 1039 Blindern 0315 Oslo

Publications

  • Ingeborgrud, Christine Baalsrud; Ørbeck, Beate; Friis, Svein; Zeiner, Pål; Pripp, Are Hugo & Aase, Heidi [Show all 9 contributors for this article] (2023). Anxiety and depression from age 3 to 8 years in children with and without ADHD symptoms. Scientific Reports. ISSN 2045-2322. 13. doi: 10.1038/s41598-023-42412-7. Full text in Research Archive
  • Øvergaard, Kristin; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Aase, Heidi & Biele, Guido [Show all 9 contributors for this article] (2023). Early and repeated screening detects children with persistent attention-deficit/hyperactivity disorder. European Child and Adolescent Psychiatry. ISSN 1018-8827. doi: 10.1007/s00787-023-02284-8. Full text in Research Archive
  • Gohar, Sherif Mostafa Mohamed Ahmed; Hegelstad, Wenche; Auestad, Bjørn Henrik; Haahr, Ulrik Helt; Joa, Inge & Johannessen, Jan Olav [Show all 13 contributors for this article] (2023). Association between early suicidal trajectories in first-episode psychosis and 10-year follow-up: TIPS registry-linked study. The Lancet Psychiatry. ISSN 2215-0374. 10(7), p. 528–536. doi: 10.1016/S2215-0366(23)00156-6.
  • Øvergaard, Kristin; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Aase, Heidi & Biele, Guido [Show all 9 contributors for this article] (2022). Attention-deficit/hyperactivity disorder from preschool to school age: change and stability of parent and teacher reports. European Child and Adolescent Psychiatry. ISSN 1018-8827. doi: 10.1007/s00787-022-02019-1. Full text in Research Archive
  • Biele, Guido; Lekhal, Ratib; Øvergaard, Kristin Romvig; Wang, Mari Vaage; Brandlistuen, Ragnhild Eek & Friis, Svein [Show all 7 contributors for this article] (2022). The effect of special educational assistance in early childhood education and care on psycho-social difficulties in elementary school children. Child and Adolescent Psychiatry and Mental Health (CAPMH). ISSN 1753-2000. 16. doi: 10.1186/s13034-022-00442-5. Full text in Research Archive
  • Biele, Guido; Øvergaard, Kristin Romvig; Friis, Svein; Zeiner, Pål & Aase, Heidi (2022). Cognitive, emotional, and social functioning of preschoolers with attention deficit hyperactivity problems. BMC Psychiatry. ISSN 1471-244X. 22. doi: 10.1186/s12888-021-03638-9. Full text in Research Archive
  • Ruud, Torleif & Friis, Svein (2021). Community-based Mental Health Services in Norway. Consortium Psychiatricum. ISSN 2712-7672. 2(1), p. 47–54. doi: 10.17816/CP43.
  • Ottesen, Akiah; Hegelstad, Wenche; Joa, Inge; Opjordsmoen, Stein E.; Rund, Bjørn Rishovd & Røssberg, Jan Ivar [Show all 13 contributors for this article] (2021). Childhood trauma, antipsychotic medication, and symptom remission in first-episode psychosis. Psychological Medicine. ISSN 0033-2917. p. 1–10. doi: 10.1017/S003329172100427X. Full text in Research Archive
  • Overgaard, Kristin Romvig; Ørbeck, Beate; Wagner, Karine; Friis, Svein; Øhre, Beate & Zeiner, Pål (2021). Youth with hearing loss: Emotional and behavioral problems and quality of life. International Journal of Pediatric Otorhinolaryngology. ISSN 0165-5876. 145. doi: 10.1016/j.ijporl.2021.110718.
  • Vaskinn, Anja; Sundet, Kjetil; Melle, Ingrid; Andreassen, Ole A. & Friis, Svein (2021). The factor structure of social cognition in schizophrenia: Weak evidence for separable domains. Schizophrenia Research: Cognition. ISSN 2215-0013. 26, p. 1–4. doi: 10.1016/j.scog.2021.100208. Full text in Research Archive
  • Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Aase, Heidi & Zeiner, Pål (2021). Predictive validity of attention-deficit/hyperactivity disorder from ages 3 to 5 Years. European Child and Adolescent Psychiatry. ISSN 1018-8827. 31, p. 1093–1102. doi: 10.1007/s00787-021-01750-5. Full text in Research Archive
  • Srihari, Vinod H.; Guloksuz, Sinan & Friis, Svein (2020). Natural History, Not Lead Time. American Journal of Psychiatry. ISSN 0002-953X. 177(12), p. 1185–1185. doi: 10.1176/appi.ajp.2020.20040402.
  • Wedervang-Resell, Kirsten; Ueland, Thor; Aukrust, Pål; Friis, Svein; Holven, Kirsten Bjørklund & Johannessen, Cecilie Haggag [Show all 13 contributors for this article] (2020). Reduced levels of circulating adhesion molecules in adolescents with early-onset psychosis. Nature NPJ Schizophrenia. ISSN 2334-265X. 6, p. 1–8. doi: 10.1038/s41537-020-00112-5. Full text in Research Archive
  • Wedervang-Resell, Kirsten; Friis, Svein; Lonning, Vera Louise Hiorth; Smelror, Runar; Johannessen, Cecilie Haggag & Agartz, Ingrid [Show all 10 contributors for this article] (2019). Lipid alterations in adolescents with early-onset psychosis may be independent of antipsychotic medication. Schizophrenia Research. ISSN 0920-9964. p. 1–7. doi: 10.1016/j.schres.2019.11.039. Full text in Research Archive
  • Wedervang-Resell, Kirsten; Friis, Svein; Lonning, Vera Louise Hiorth; Smelror, Runar; Johannessen, Cecilie Haggag & Reponen, Elina Johanna [Show all 13 contributors for this article] (2019). Increased interleukin 18 activity in adolescents with early-onset psychosis is associated with cortisol and depressive symptoms. Psychoneuroendocrinology. ISSN 0306-4530. 112:104513, p. 1–7. doi: 10.1016/j.psyneuen.2019.104513. Full text in Research Archive
  • Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Biele, Guido; Pripp, Are Hugo & Aase, Heidi [Show all 7 contributors for this article] (2019). Screening With an ADHD-Specific Rating Scale in Preschoolers: A Cross-Cultural Comparison of the Early Childhood Inventory-4. Psychological Assessment. ISSN 1040-3590. 31(8), p. 985–994. doi: 10.1037/pas0000722. Full text in Research Archive
  • Weibell, Melissa Anne E; Johannessen, Jan Olav; Auestad, Bjørn Henrik; Bramness, Jørgen Gustav; Brønnick, Kolbjørn Kallesten & Haahr, Ulrik [Show all 17 contributors for this article] (2019). Early substance use cessation improves cognition-10 years outcome in first-episode psychosis patients. Frontiers in Psychiatry. ISSN 1664-0640. 10. doi: 10.3389/fpsyt.2019.00495. Full text in Research Archive
  • Ferrara, Maria; Guloksuz, Sinan; Li, Fangyong; Burke, Shadie; Tek, Cenk & Friis, Svein [Show all 12 contributors for this article] (2019). Parsing the impact of early detection on duration of untreated psychosis (DUP): Applying quantile regression to data from the Scandinavian TIPS study. Schizophrenia Research. ISSN 0920-9964. 210, p. 128–134. doi: 10.1016/j.schres.2019.05.035.
  • Øvergaard, Kristin Romvig; Madsen, Kathrine Bang; Ørbeck, Beate; Friis, Svein & Obel, Carsten (2018). The predictive validity of the Strengths and Difficulties Questionnaire for child attention-deficit/hyperactivity disorder. European Child and Adolescent Psychiatry. ISSN 1018-8827. 28(5), p. 625–633. doi: 10.1007/s00787-018-1226-9.
  • Gardsjord, Erlend Strand; Romm, Kristin Lie; Røssberg, Jan Ivar; Friis, Svein; Barder, Helene & Evensen, Julie Horgen [Show all 17 contributors for this article] (2018). Depression and functioning are important to subjective quality of life after a first episode psychosis. Comprehensive Psychiatry. ISSN 0010-440X. 86, p. 107–114. doi: 10.1016/j.comppsych.2018.07.014.
  • Moore, Jennifer; Friis, Svein; Graham, Ian D.; Gundersen, Elisabeth & Nordvik, Jan Egil (2018). Reported use of evidence in clinical practice: A survey of rehabilitation practices in Norway. BMC Health Services Research. ISSN 1472-6963. 18(379). doi: 10.1186/s12913-018-3193-8. Full text in Research Archive
  • Øvergaard, Kristin Romvig; Ørbeck, Beate; Friis, Svein; Pripp, Are Hugo; Biele, Guido & Aase, Heidi [Show all 7 contributors for this article] (2018). Attention-Deficit/Hyperactivity Disorder in Preschoolers: The Accuracy of a Short Screener. Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. 57(6), p. 428–435. doi: 10.1016/j.jaac.2018.03.008. Full text in Research Archive
  • Melle, Ingrid; Johannessen, Jan Olav; Haahr, Ulrik H.; Hegelstad, Wenche; Joa, Inge & Langeveld, Johannes H. [Show all 15 contributors for this article] (2017). Causes and predictors of premature death in first-episode schizophrenia spectrum disorders. World Psychiatry. ISSN 1723-8617. 16(2), p. 217–218. doi: 10.1002/wps.20431.
  • Gardsjord, Erlend Strand; Romm, Kristin Lie; Røssberg, Jan Ivar; Friis, Svein; Barder, Helene & Evensen, Julie Horgen [Show all 18 contributors for this article] (2017). Is going into stable symptomatic remission associated with a more positive development of life satisfaction? A 10-year follow-up study of first episode psychosis. Schizophrenia Research. ISSN 0920-9964. 193, p. 364–369. doi: 10.1016/j.schres.2017.07.006.
  • Langeveld, Johannes H.; Bjørkly, Stål; Evensen, Julie Horgen; Joa, Inge; Johannessen, Jan Olav & Larsen, Tor Ketil [Show all 15 contributors for this article] (2017). A 10-year follow-up study of violent victimization in first episode psychosis : risk and protective factors. Psychiatry Research. ISSN 0165-1781. 259(January), p. 545–549. doi: 10.1016/j.psychres.2017.11.013.
  • Weibell, Melissa Anne ; Hegelstad, Wenche; Auestad, Bjørn Henrik; Bramness, Jørgen Gustav; Evensen, Julie Horgen & Haahr, Ulrik [Show all 17 contributors for this article] (2017). The Effect of Substance Use on 10-Year Outcome in First-Episode Psychosis. Schizophrenia Bulletin. ISSN 0586-7614. 43(4), p. 843–851. doi: 10.1093/schbul/sbw179.
  • Furre, Astrid; Falk, Ragnhild Sørum; Sandvik, Leiv; Friis, Svein; Knutzen, Maria & Hanssen-Bauer, Ketil (2017). Characteristics of adolescents frequently restrained in acute psychiatric units in Norway: A nationwide study. Child and Adolescent Psychiatry and Mental Health (CAPMH). ISSN 1753-2000. 11(1). doi: 10.1186/s13034-016-0136-1.
  • Falkum, Erik; Klungsøyr, Ole; Lystad, June Ullevoldsæter; Bull, Helen Christine; Evensen, Stig & Martinsen, Egil Wilhelm [Show all 8 contributors for this article] (2017). Vocational rehabilitation for adults with psychotic disorders in a Scandinavian welfare society. BMC Psychiatry. ISSN 1471-244X. 17:24, p. 1–11. doi: 10.1186/s12888-016-1183-0. Full text in Research Archive
  • Bendiksen, Bothild; Svensson, Elisabeth; Aase, Heidi; Reichborn-Kjennerud, Ted; Friis, Svein & Myhre, Anne Margrethe [Show all 7 contributors for this article] (2017). Co-Occurrence of ODD and CD in Preschool Children With Symptoms of ADHD. Journal of Attention Disorders. ISSN 1087-0547. 21(9), p. 741–752. doi: 10.1177/1087054714538655.
  • Haahr, Ulrik Helt; Larsen, Tor Ketil; Simonsen, Erik; Rund, Bjørn Rishovd; Joa, Inge & Røssberg, Jan Ivar [Show all 16 contributors for this article] (2016). Relation between premorbid adjustment, duration of untreated psychosis and close interpersonal trauma in first-episode psychosis . Early Intervention in Psychiatry. ISSN 1751-7885. 12(3), p. 316–323. doi: 10.1111/eip.12315.
  • Hegelstad, Wenche; Brønnick, Kolbjørn Selvåg; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik & Joa, Inge [Show all 17 contributors for this article] (2016). Preventing poor vocational functioning in psychosis through early intervention. Psychiatric Services. ISSN 1075-2730. 68(1), p. 100–103. doi: 10.1176/appi.ps.201500451.
  • Kvåle, Alice; Bunkan, Berit Heir; Ilner, Stein E. Opjordsmoen & Friis, Svein (2016). The Global Body Examination (GBE): A useful instrument for examination of patients with long-lasting musculoskeletal and/or psychological disorders. European Journal of Physiotherapy. ISSN 2167-9169. 18(2), p. 137–143. doi: 10.3109/21679169.2016.1149217.
  • Gardsjord, Erlend Strand; Romm, Kristin Lie; Friis, Svein; Barder, Helene; Evensen, Julie Horgen & Haahr, Ulrik [Show all 18 contributors for this article] (2016). Subjective quality of life in first-episode psychosis. A ten year follow-up study. Schizophrenia Research. ISSN 0920-9964. 172(1-3), p. 23–28. doi: 10.1016/j.schres.2016.02.034.
  • Bjerke, Espen; Solbakken, Ole Andre; Friis, Svein & Monsen, Jon Trygve (2016). Self-Relatedness and Interpersonal Problems in a Large Psychiatric Outpatient Sample. PSYCHOLOGY. ISSN 2152-7180. 7, p. 864–876. doi: 10.4236/psych.2016.76088.
  • Furre, Astrid; Sandvik, Leiv; Friis, Svein; Knutzen, Maria & Hanssen-Bauer, Ketil (2016). A nationwide study of why and how acute adolescent psychiatric units use restraint. Psychiatry Research. ISSN 0165-1781. 237, p. 60–66. doi: 10.1016/j.psychres.2016.01.067.
  • Friis, Svein; Melle, Ingrid; Johannessen, Jan Olav; Røssberg, Jan Ivar; Barder, Helene & Evensen, Julie Horgen [Show all 16 contributors for this article] (2016). Early Predictors of Ten-Year Course in First-Episode Psychosis. Psychiatric Services. ISSN 1075-2730. 67(4), p. 438–443. doi: 10.1176/appi.ps.201400558.
  • Rund, Bjørn Rishovd; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche & Joa, Inge [Show all 17 contributors for this article] (2016). Neurocognition and Duration of Psychosis: A 10-year Follow-up of First-Episode Patients. Schizophrenia Bulletin. ISSN 0586-7614. 42(1), p. 87–95. doi: 10.1093/schbul/sbv083.
  • Sønmez, Nasrettin; Røssberg, Jan Ivar; Evensen, Julie Horgen; Barder, Helene; Haahr, Ulrik & Hegelstad, Wenche [Show all 17 contributors for this article] (2016). Depressive symptoms in first-episode psychosis: A 10-year follow-up study. Early Intervention in Psychiatry. ISSN 1751-7885. 10(3), p. 227–233. doi: 10.1111/eip.12163.
  • Nilsen, Liv; Frich, Jan C; Friis, Svein; Norheim, Irene & Røssberg, Jan Ivar (2016). Participants' perceived benefits of family intervention following a first episode of psychosis: A qualitative study. Early Intervention in Psychiatry. ISSN 1751-7885. 10(2), p. 152–159. doi: 10.1111/eip.12153.
  • Bendiksen, Bothild; Aase, Heidi; Diep, Lien My; Svensson, Elisabeth; Friis, Svein & Zeiner, Pål (2015). The Associations Between Pre- and Postnatal Maternal Symptoms of Distress and Preschooler's Symptoms of ADHD, Oppositional Defiant Disorder, Conduct Disorder, and Anxiety. Journal of Attention Disorders. ISSN 1087-0547. doi: 10.1177/1087054715616185.
  • Nilsen, Liv; Norheim, Irene; Frich, Jan C; Friis, Svein & Røssberg, Jan Ivar (2015). Challenges for group leaders working with families dealing with early psychosis: a qualitative study. BMC Psychiatry. ISSN 1471-244X. 15. doi: 10.1186/s12888-015-0540-8.
  • Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik & Hegelstad, Wenche [Show all 17 contributors for this article] (2015). Ten year course of IQ in first-episode psychosis: relationship between duration of psychsis and long-term intellectual trajectories. Psychiatry Research. ISSN 0165-1781. 225(3), p. 515–521. doi: 10.1016/j.psychres.2014.11.054.
  • Bull, Helen Christine; Ueland, Toril; Lystad, June; Evensen, Stig; Friis, Svein & Martinsen, Egil Wilhelm [Show all 7 contributors for this article] (2014). Validation of the Work Behavior Inventory. Nordic Journal of Psychiatry. ISSN 0803-9488. 69(4), p. 300–306. doi: 10.3109/08039488.2014.973902.
  • Furre, Astrid; Sandvik, Leiv; Heyerdahl, Sonja; Friis, Svein; Knutzen, Maria & Hanssen-Bauer, Ketil (2014). Characteristics of adolescents subjected to restraint in acute psychiatric units in Norway: A case-control study. Psychiatric Services. ISSN 1075-2730. 65(11), p. 1367–1372. doi: 10.1176/appi.ps.201300429.
  • Bendiksen, Bothild; Aase, Heidi; Svensson, Elisabeth; Friis, Svein; Myhre, Anne Margrethe & Reichborn-Kjennerud, Ted [Show all 7 contributors for this article] (2014). Impairment in young preschool children with symptoms of attention-deficit/hyperactivity disorder and co-occurring oppositional defiant disorder and conduct disorder. Scandinavian Journal of Child and Adolescent Psychiatry and Psychology. ISSN 2245-8875. 2(3), p. 95–105. doi: 10.21307/sjcapp-2014-014. Full text in Research Archive
  • Langeveld, Johannes H.; Bjørkly, Stål; Auestad, Bjørn Henrik; Barder, Helene; Evensen, Julie Horgen & Hegelstad, Wenche [Show all 17 contributors for this article] (2014). Treatment and violent behavior in persons with first episode psychosis during a 10-year prospective follow-up study. Schizophrenia Research. ISSN 0920-9964. 156(2-3), p. 272–276. doi: 10.1016/j.schres.2014.04.010.
  • Knutzen, Maria; Bjørkly, Stål; Eidhammer, Gunnar; Lorentzen, Steinar; Mjøsund, Nina Helen & Ilner, Stein E. Opjordsmoen [Show all 8 contributors for this article] (2014). Characteristics of patients frequently subjected to pharmacological and mechanical restraint—A register study in three Norwegian acute psychiatric wards. Psychiatry Research. ISSN 0165-1781. 215(1), p. 127–133. doi: 10.1016/j.psychres.2013.10.024.
  • Hegelstad, Wenche; Joa, Inge; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik & Johannessen, Jan Olav [Show all 16 contributors for this article] (2014). Variation in duration of untreated psychosis in an 18-year perspective. Early Intervention in Psychiatry. ISSN 1751-7885. 8(4), p. 323–331. doi: 10.1111/eip.12057.
  • Jónsdóttir, Halldóra; Ilner, Stein E. Opjordsmoen; Birkenæs, Astrid Brate; Simonsen, Carmen Elisabeth; Engh, John & Ringen, Petter Andreas [Show all 10 contributors for this article] (2013). Predictors of medication adherence in patients with schizophrenia and bipolar disorder. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 127(1), p. 23–33. doi: 10.1111/j.1600-0447.2012.01911.x.
  • Færden, Ann; Barrett, Elizabeth Ann; Nesvåg, Ragnar; Friis, Svein; Finset, Arnstein & Marder, Stephen R. [Show all 10 contributors for this article] (2013). Apathy, poor verbal memory and male gender predict lower psychosocial functioning one year after the first treatment of psychosis. Psychiatry Research. ISSN 0165-1781. 210(1), p. 55–61. doi: 10.1016/j.psychres.2013.02.007.
  • Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik & Hegelstad, Wenche [Show all 17 contributors for this article] (2013). Ten year neurocognitive trajectories in first-episode psychosis. Frontiers in Human Neuroscience. ISSN 1662-5161. 7. doi: 10.3389/fnhum.2013.00643. Full text in Research Archive
  • Knutzen, Maria; Bjørkly, Stål; Eidhammer, Gunnar; Lorentzen, Steinar; Mjøsund, Nina Helen & Ilner, Stein E. Opjordsmoen [Show all 8 contributors for this article] (2013). Mechanical and pharmacological restraints in acute psychiatric wards - why and how are they used? Psychiatry Research. ISSN 0165-1781. 209(1), p. 91–97. doi: 10.1016/j.psychres.2012.11.017.
  • Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Evensen, Julie Horgen; Haahr, Ulrik & Hegelstad, Wenche [Show all 17 contributors for this article] (2013). Neurocognitive development in first episode psychosis 5 years follow-up: associations between illness severity and cognitive course. Schizophrenia Research. ISSN 0920-9964. 149(1-3), p. 63–69. doi: 10.1016/j.schres.2013.06.016.
  • Kvåle, Alice; Bunkan, Berit Heir; Ilner, Stein E. Opjordsmoen & Friis, Svein (2013). Development of the Palpation Domain for Muscle and Skin in the Global Body Examination. Journal of Musculoskeletal Pain. ISSN 1058-2452. 21(1), p. 9–18. doi: 10.3109/10582452.2012.762821. Full text in Research Archive
  • Hegelstad, Wenche; Haahr, Ulrik; Larsen, Tor Ketil; Auestad, Bjørn Henrik; Barder, Helene & Evensen, Julie Horgen [Show all 17 contributors for this article] (2013). Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study. Schizophrenia Research. ISSN 0920-9964. 143(2-3), p. 337–343. doi: 10.1016/j.schres.2012.10.027.
  • Bakken, Trine Lise; Røssberg, Jan Ivar & Friis, Svein (2012). The used of the Ward Atmosphere Scale for intellectually disabled psychiatric inpatients: A pilot study. Advances in Mental Health and Intellectual Disabilities. ISSN 2044-1282. p. 265–272. doi: 10.1108/20441281211261159.
  • Haahr, Ulrik; Simonsen, Erik; Røssberg, Jan Ivar; Johannessen, Jan Olav; Larsen, Tor Ketil & Melle, Ingrid [Show all 11 contributors for this article] (2012). Patient satisfaction with treatment in first-episode psychosis. Nordic Journal of Psychiatry. ISSN 0803-9488. 66(5), p. 329–335. doi: 10.3109/08039488.2011.644808.
  • Bakken, TL; Røssberg, Jan Ivar & Friis, Svein (2012). The use of the Ward Atmosphere Scale for intellectually disabled psychiatry inpatients: A pilot study. Advances in Mental Health and Intellectual Disabilities. ISSN 2044-1282. p. 265–272.
  • Friis, Svein; Kvåle, Alice; Ilner, Stein E. Opjordsmoen & Bunkan, Berit Heir (2012). The Global Body Examination (GBE). A useful instrument for evaluation of respiration. Advances in Physiotherapy. ISSN 1403-8196. 14(4), p. 146–154. doi: 10.3109/14038196.2012.704943.
  • Langeveld, Johannes H.; Joa, Inge; Friis, Svein; Hegelstad, Wenche; Melle, Ingrid & Johannessen, Jan Olav [Show all 12 contributors for this article] (2012). A Comparison of Adolescent and Adult Onset First-Episode Non Affective Psychosis: 2-year Follow-up:. European Archives of Psychiatry and Clinical Neuroscience. ISSN 0940-1334. 262, p. 599–605. doi: 10.1007/s00406-012-0308-9..
  • Friis, Svein (2012). Kan man bli frisk av schizofreni. Tidsskrift for Den norske legeforening. ISSN 0029-2001. p. 847–848. doi: 10.4045/tidsskr.12.0270.
  • Evensen, Julie Horgen; Røssberg, Jan Ivar; Barder, Helene; Haahr, Ulrik; Hegelstad, Wenche & Joa, Inge [Show all 15 contributors for this article] (2012). Flat affect and social functioning: A 10 year follow-up study of first episode psychosis patients. Schizophrenia Research. ISSN 0920-9964. 139(1-3), p. 99–104. doi: 10.1016/j.schres.2012.04.019.
  • Evensen, Julie Horgen; Røssberg, Jan Ivar; Barder, Helene; Haahr, Ulrik; Hegelstad, Wenche & Joa, Inge [Show all 16 contributors for this article] (2012). Apathy in first episode psychosis patients: A ten year longitudinal follow-up study. Schizophrenia Research. ISSN 0920-9964. 136(1-3), p. 19–24. doi: 10.1016/j.schres.2011.12.019.
  • Hegelstad, Wenche; Larsen, Tor Kjetil; Auestad, Bjørn Henrik; Evensen, Julie Horgen; Haahr, Ulrik & Joa, Inge [Show all 17 contributors for this article] (2012). Long-Term Follow-Up of the TIPS Early Detection in Psychosis Study: Effects on 10-Year Outcome. American Journal of Psychiatry. ISSN 0002-953X. 169(4), p. 374–380. doi: 10.1176/appi.ajp.2011.11030459.
  • Kvåle, Alice; Bunkan, Berit Heir; Ilner, Stein E. Opjordsmoen & Friis, Svein (2012). Development of the Movement domain in the Global Body Examination. Physiotherapy Theory and Practice. ISSN 0959-3985. 28(1), p. 41–49. doi: 10.3109/09593985.2011.561419.
  • Nesvold, Helle; Ormstad, Kari & Friis, Svein (2011). Sexual assault centres and police reporting - an important arena for medical/legal interaction. Journal of Forensic Sciences. ISSN 0022-1198. 56(5), p. 1163–1169. doi: 10.1111/j.1556-4029.2011.01880.x.
  • Knutzen, Maria; Mjøsund, Nina Helen; Eidhammer, Gunnar; Lorentzen, Steinar; Ilner, Stein E. Opjordsmoen & Sandvik, Leiv [Show all 7 contributors for this article] (2011). Characteristics of Psychiatric Inpatients Who Experienced Restraint and Those Who Did Not: A Case-Control Study. Psychiatric Services. ISSN 1075-2730. 62(5), p. 492–497. doi: 10.1176/ps.62.5.pss6205_0492.
  • Nesvold, Helle; Ormstad, Kari & Friis, Svein (2011). To be Used or Not to be Used, that is the Question: Legal Use of Forensic and Clinical Information Collected in a Self-referral Sexual Assault Centre. Journal of Forensic Sciences. ISSN 0022-1198. 56(5), p. 1156–1162. doi: 10.1111/j.1556-4029.2011.01879.x.
  • Johannessen, Jan Olav; Joa, Inge; Auestad, Bjørn; Haahr, Ulrik; Larsen, Tor Ketil & Melle, Ingrid [Show all 13 contributors for this article] (2011). First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course and health service use during 5 years. Early Intervention in Psychiatry. ISSN 1751-7885. 5(1), p. 70–75. doi: 10.1111/j.1751-7893.2010.00201.x.
  • Tandberg, Marte; Ueland, Toril; Sundet, Kjetil Søren; Haahr, Ulrik; Joa, Inge & Johannessen, Jan Olav [Show all 15 contributors for this article] (2011). Neurocognition and occupational functioning in patients with first-episode psychosis: a 2-year follow-up study. Psychiatry Research. ISSN 0165-1781. 188(3), p. 334–342. doi: 10.1016/j.psychres.2011.04.021.

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Published Apr. 13, 2011 2:55 PM - Last modified Aug. 30, 2017 1:45 PM