Per Nafstad

• Mohn, Cathrine Helene; Blix, Hege Salvesen; Brænd, Anja Maria; Nafstad, Per & Halvorsen, Jon Anders (2023). Prevalence of Isotretinoin Therapy in Adolescents and Young Adults With and Without Atopic Dermatitis: A Nationwide Prescription-based Population Study. Acta Dermato-Venereologica. ISSN 0001-5555. 103, p. 1–7. doi: 10.2340/actadv.v103.9424. Full text in Research Archive
• Mohn, Cathrine Helene; Blix, Hege Salvesen; Brænd, Anja Maria; Nafstad, Per; Nygård, Ståle & Halvorsen, Jon Anders (2022). Treatment Patterns of Atopic Dermatitis Medication in 0–10-Year-Olds: A Nationwide Prescription-Based Study. Dermatology and Therapy. ISSN 2193-8210. 12(7), p. 1639–1657. doi: 10.1007/s13555-022-00754-6. Full text in Research Archive
• Lund Håheim, Lise; Schwarze, Per Everhard; Thelle, Dag Steinar; Nafstad, Per; Rønningen, Kjersti Skjold & Olsen, Ingar (2020). Low levels of antibodies for the oral bacterium Tannerella forsythia predict cardiovascular disease mortality in men with myocardial infarction: A prospective cohort study. Medical Hypotheses. ISSN 0306-9877. 138. doi: 10.1016/j.mehy.2020.109575. Full text in Research Archive
• Kollerud, Ruby Del Risco; Cannon-Albright, LA; Haugnes, Hege Sagstuen; Ruud, Ellen; Thoresen, Magne & Nafstad, Per [Show all 9 contributors for this article] (2020). Childhood central nervous system tumors and leukemia: Incidence and familial risk. A comparative population-based study in Utah and Norway. Pediatric Blood & Cancer. ISSN 1545-5009. Aug;67(8):e28408. doi: 10.1002/pbc.28408. Full text in Research Archive
• Melbye, Hasse; Helgeland, Jon; Karlstad, Øystein; Ariansen, Inger; Langhammer, Arnulf & Wisløff, Torbjørn [Show all 8 contributors for this article] (2020). Is the disease burden from COPD in Norway falling off? A study of time trends in three different data sources. The International Journal of Chronic Obstructive Pulmonary Disease. ISSN 1176-9106. 15, p. 323–334. doi: 10.2147/COPD.S235106. Full text in Research Archive
• Kollerud, Ruby Del Risco; Haugnes, Hege Sagstuen; Claussen, Bjørgulf; Thoresen, Magne; Nafstad, Per & Farnham, James [Show all 9 contributors for this article] (2020). A population-based study of testicular cancer risk among children and young adults from Norway and Utah, USA. International Journal of Cancer. ISSN 0020-7136. 147(6). doi: 10.1002/ijc.32949. Full text in Research Archive
• Rantala, Aino K.; Magnus, Maria Christine; Karlstad, Øystein; Stigum, Hein; Håberg, Siri Eldevik & Nafstad, Per [Show all 8 contributors for this article] (2020). Is the association of early day care attendance with childhood asthma explained by underlying susceptibility? Epidemiology. ISSN 1044-3983. p. 451–458. doi: 10.1097/EDE.0000000000001163. Full text in Research Archive
• Lund Håheim, Lise; Nafstad, Per; Schwarze, Per Everhard; Olsen, Ingar; Rønningen, Kjersti Skjold & Thelle, Dag Steinar (2019). Oral health and cardiovascular disease risk factors and mortality of cerebral haemorrhage, cerebral infarction and unspecified stroke in elderly men: A prospective cohort study. Scandinavian Journal of Public Health. ISSN 1403-4948. doi: 10.1177/1403494819879351. Full text in Research Archive
• Evandt, Jorunn; Skurtveit, Svetlana; Oftedal, Bente Margaret; Krog, Norun Hjertager; Nafstad, Per & Skovlund, Eva [Show all 8 contributors for this article] (2019). Agreement between self-reported and registry-based use of sleep medications and tranquilizers. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 28(10), p. 1336–1343. doi: 10.1002/pds.4854. Full text in Research Archive
• Kollerud, Ruby Del Risco; Ruud, Ellen; Haugnes, Hege Sagstuen; Cannon-Albright, Lisa A.; Thoresen, Magne & Nafstad, Per [Show all 10 contributors for this article] (2019). Family history of cancer and risk of paediatric and young adult’s testicular cancer: A Norwegian cohort study. British Journal of Cancer. ISSN 0007-0920. 120, p. 1007–1014. doi: 10.1038/s41416-019-0445-2. Full text in Research Archive
• Magnus, Maria Christine; Karlstad, Øystein; Parr, Christine Louise; Page, Christian; Nafstad, Per & Magnus, Per [Show all 10 contributors for this article] (2019). Maternal history of miscarriages and measures of fertility in relation to childhood asthma. Thorax. ISSN 0040-6376. 74(2), p. 106–113. doi: 10.1136/thoraxjnl-2018-211886. Full text in Research Archive
• Mohn, Cathrine Helene; Halvorsen, Jon Anders; Salvesen, Hege Blix; Lagerløv, Per; Nafstad, Per & Valberg, Morten (2018). Incidence Trends of Atopic Dermatitis in Infancy and Early Childhood in a Nationwide Prescription Registry Study in Norway. JAMA Network Open. ISSN 2574-3805. doi: 10.1001/jamanetworkopen.2018.4145.
• Mohn, Cathrine Helene; Blix, Hege Salvesen; Halvorsen, Jon Anders; Nafstad, Per; Valberg, Morten & Lagerløv, Per (2018). Incidence Trends of Atopic Dermatitis in Infancy and Early Childhood in a Nationwide Prescription Registry Study in Norway. JAMA Network Open. ISSN 2574-3805. 1(7). doi: 10.1001/jamanetworkopen.2018.4145. Full text in Research Archive
• Nafstad, Per (2018). Kronisk obstruktiv lungesykdom (kols) i Norge. In Grøholt, Else Karin; Bøhler, Linn & Hånes, Hanna (Ed.), Folkehelserapporten - Helsetilstanden i Norge. Folkehelseinstituttet.
• Nafstad, Per; Granum, Berit; Nystad, Wenche & Nygaard, Unni Cecilie (2018). Astma og allergi. In Grøholt, Else Karin; Bøhler, Linn & Hånes, Hanna (Ed.), Folkehelserapporten - Helsetilstanden i Norge. Folkehelseinstituttet.
• Parr, Christine Louise; Magnus, Maria Christine; Karlstad, Øystein; Holvik, Kristin; Lund-Blix, Nicolai Andre & Haugen, Margaretha [Show all 12 contributors for this article] (2018). Vitamin A and D intake in pregnancy, infant supplementation, and asthma development: The Norwegian Mother and Child Cohort. American Journal of Clinical Nutrition. ISSN 0002-9165. 107(5), p. 789–798. doi: 10.1093/ajcn/nqy016. Full text in Research Archive
• Kollerud, Ruby Del Risco; Blaasaas, Karl Gerhard; Claussen, Bjørgulf; Nafstad, Per; Cannon-Albright, Lisa A. & Ruud, Ellen [Show all 8 contributors for this article] (2018). Family history of cancer and the risk of childhood solid tumours: A Norwegian nationwide register-based cohort study. British Journal of Cancer. ISSN 0007-0920. 118(6), p. 905–912. doi: 10.1038/bjc.2017.493.
• Magnus, Maria Christine; Wright, Rosalind J.; Røysamb, Espen; Parr, Christine Louise; Karlstad, Øystein & Page, Christian [Show all 10 contributors for this article] (2018). Association of Maternal Psychosocial Stress with Increased Risk of Asthma Development in Offspring. American Journal of Epidemiology. ISSN 0002-9262. 187(6), p. 1199–1209. doi: 10.1093/aje/kwx366. Show summary

  Prenatal maternal psychosocial stress might influence childhood asthma development. Evaluating paternal psychosocial stress and conducting a sibling comparison could provide further insight into the role of unmeasured confounding. We examined the associations of parental psychosocial stress during and after pregnancy with asthma at 7 years in the Norwegian Mother and Child Cohort Study (n = 63,626). Measures of psychosocial stress included lifetime major depressive symptoms, current anxiety/depression symptoms, use of antidepressants, anxiolytics and/or hypnotics, life satisfaction, relationship satisfaction, work stress and social support. Childhood asthma was associated with maternal lifetime major depressive symptoms, adjusted relative risk (aRR) = 1.19 (95% CI: 1.09, 1.30), in addition to symptoms of anxiety/depression during pregnancy, aRR = 1.17 (95% CI: 1.06, 1.29), and 6 months after delivery, aRR = 1.17 (95% CI: 1.07, 1.28). Maternal negative life events during pregnancy, aRR = 1.10 (95% CI: 1.06, 1.13), and 6 months after delivery, aRR = 1.14 (95% CI: 1.11, 1.18), were also associated with asthma. These associations were not replicated when evaluated within sibling groups. There were no associations with paternal psychosocial stress. In conclusion, maternal anxiety/depression and negative life events was associated with offspring asthma, but this might be explained by unmeasured maternal background characteristics that remain stable across deliveries.

• Madsen, Christian; Håberg, Siri Eldevik; Aamodt, Geir; Stigum, Hein; Magnus, Per & London, Stephanie J. [Show all 8 contributors for this article] (2017). Preeclampsia and hypertension during pregnancy in areas with relatively low levels of traffic air pollution. Maternal and Child Health Journal. ISSN 1092-7875. 22(4), p. 512–519. doi: 10.1007/s10995-017-2417-6.
• Madsen, Christian; Håberg, Siri Eldevik; Magnus, Maria Christine; Aamodt, Geir; Stigum, Hein & London, Stephanie J. [Show all 8 contributors for this article] (2017). Pregnancy exposure to air pollution and early childhood respiratory health in the Norwegian Mother and Child Cohort Study (MoBa). BMJ Open. ISSN 2044-6055. 7(12). doi: 10.1136/bmjopen-2016-015796. Full text in Research Archive
• Gonggalanzi, ?; Labasangzhu, X; Bjertness, Espen; Wu, Tianyi; Stigum, Hein & Nafstad, Per (2017). Acute mountain sickness, arterial oxygen saturation and heart rate among Tibetan students who reascend to Lhasa after 7 years at low altitude: A prospective cohort study. BMJ Open. ISSN 2044-6055. 7. doi: 10.1136/bmjopen-2017-016460. Full text in Research Archive
• Evandt, Jorunn; Oftedal, Bente Margaret; Krog, Norun Hjertager; Skurtveit, Svetlana; Nafstad, Per & Schwarze, Per E [Show all 9 contributors for this article] (2017). Road traffic noise and registry based use of sleep medication. Environmental health. ISSN 1476-069X. 16. doi: 10.1186/s12940-017-0330-5. Full text in Research Archive
• Giorgis-Allemand, Lise; Pedersen, Marie; Bernard, Claire; Aguilera, Inmaculada; Beelen, Rob M.J. & Chatzi, Leda [Show all 49 contributors for this article] (2017). The influence of meteorological factors and atmospheric pollutants on the risk of preterm birth. American Journal of Epidemiology. ISSN 0002-9262. 185(4), p. 247–258. doi: 10.1093/aje/kww141. Show summary

  Atmospheric pollutants and meteorological conditions are suspected to be causes of preterm birth. We aimed to characterize their possible association with the risk of preterm birth (defined as birth occurring before 37 completed gestational weeks). We pooled individual data from 13 birth cohorts in 11 European countries (71,493 births from the period 1994-2011, European Study of Cohorts for Air Pollution Effects (ESCAPE)). City-specific meteorological data from routine monitors were averaged over time windows spanning from 1 week to the whole pregnancy. Atmospheric pollution measurements (nitrogen oxides and particulate matter) were combined with data from permanent monitors and land-use data into seasonally adjusted land-use regression models. Preterm birth risks associated with air pollution and meteorological factors were estimated using adjusted discrete-time Cox models. The frequency of preterm birth was 5.0%. Preterm birth risk tended to increase with first-trimester average atmospheric pressure (odds ratio per 5-mbar increase = 1.06, 95% confidence interval: 1.01, 1.11), which could not be distinguished from altitude. There was also some evidence of an increase in preterm birth risk with first-trimester average temperature in the-5 degrees C to 15 degrees C range, with a plateau afterwards (spline coding, P = 0.08). No evidence of adverse association with atmospheric pollutants was observed. Our study lends support for an increase in preterm birth risk with atmospheric pressure.

• Evandt, Jorunn; Oftedal, Bente Margaret; Krog, Norun Hjertager; Nafstad, Per; Schwarze, Per E & Aasvang, Gunn Marit (2017). A Population-Based Study on Nighttime Road Traffic Noise and Insomnia. Sleep. ISSN 0161-8105. 40(2). doi: 10.1093/sleep/zsw055.
• Parr, Christine Louise; Magnus, Maria Christine; Karlstad, Øystein; Haugen, Alice Margaretha; Refsum, Helga & Ueland, Per Magne [Show all 11 contributors for this article] (2017). Maternal folate intake during pregnancy and childhood asthma in a population-based cohort. American Journal of Respiratory and Critical Care Medicine. ISSN 1073-449X. 195(2), p. 221–228. doi: 10.1164/rccm.201604-0788OC.
• Gonggalanzi, X; Labasangzhu, X; Nafstad, Per; Stigum, Hein; Wu, Tianyi & Haldorsen, Øyvind Drejer [Show all 8 contributors for this article] (2016). Acute mountain sickness among tourists visiting the high-altitude city of Lhasa at 3658 m above sea level: A cross-sectional study. Archives of Public Health. ISSN 0778-7367. 74. doi: 10.1186/S13690-016-0134-Z.
• Magnus, Maria Christine; Håberg, Siri Eldevik; Magnus, Per; Engeland, Anders; Nafstad, Per & Karlstad, Øystein [Show all 7 contributors for this article] (2016). Pre-eclampsia and childhood asthma. European Respiratory Journal. ISSN 0903-1936. 48(6), p. 1622–1630. doi: 10.1183/13993003.00673-2016.
• Magnus, Maria Christine; Karlstad, Øystein; Håberg, Siri Eldevik; Nafstad, Per; Smith, George Davey & Nystad, Wenche (2016). Prenatal and infant paracetamol exposure and development of asthma: The Norwegian Mother and Child Cohort Study. International Journal of Epidemiology. ISSN 0300-5771. 45(2), p. 512–522. doi: 10.1093/ije/dyv366.
• Panasevich, Sviatlana; Håberg, Siri Eldevik; Aamodt, Geir; London, Stephanie J; Stigum, Hein & Nystad, Wenche [Show all 7 contributors for this article] (2016). Association between pregnancy exposure to air pollution and birth weight in selected areas of Norway. Archives of Public Health. ISSN 0778-7367. 74. doi: 10.1186/s13690-016-0138-8. Full text in Research Archive
• Magnus, Maria Christine; Karlstad, Øystein; Midttun, Øivind; Håberg, Siri Eldevik; Tunheim, Gro & Parr, Christine Louise [Show all 11 contributors for this article] (2016). Maternal plasma total neopterin and kynurenine/tryptophan levels during pregnancy in relation to asthma development in the offspring. Journal of Allergy and Clinical Immunology. ISSN 0091-6749. 138(5), p. 1319–1325.e4. doi: 10.1016/j.jaci.2016.02.032.
• Raaschou-Nielsen, O; Beelen, R; Wang, M; Hoek, G; Andersen, Z J & Hoffmann, B [Show all 54 contributors for this article] (2016). Particulate matter air pollution components and risk for lung cancer. Environment International. ISSN 0160-4120. 87, p. 66–73. doi: 10.1016/j.envint.2015.11.007.
• Rosness, Tor Atle; Strand, Bjørn Heine; Bergem, Astrid Liv Mina; Nafstad, Per; Langballe, Ellen Melbye & Engedal, Knut [Show all 8 contributors for this article] (2016). Association of psychological distress late in life and dementia-related mortality. Aging & Mental Health. ISSN 1360-7863. 20(6), p. 603–610. doi: 10.1080/13607863.2015.1031639.
• Yangzong, Yangzong; Berntsen, Sveinung; Andersen, Lars Bo; Stigum, Hein; Nafstad, Per & Bjertness, Espen [Show all 8 contributors for this article] (2015). Anthropometric measures of 9-to 10-year-old native tibetan children living at 3700 and 4300m above sea level and han Chinese living at 3700m. Medicine. ISSN 0025-7974. 94(42). doi: 10.1097/MD.0000000000001516. Full text in Research Archive
• Beelen, Rob; Hoek, Gerard; Raaschou-Nielsen, Ole; Stafoggia, Massimo; Andersen, Zorana Jovanovic & Weinmayr, Gudrun [Show all 72 contributors for this article] (2015). Natural-cause mortality and long-term exposure to particle components: An Analysis of 19 European cohorts within the multi-center ESCAPE project. Environmental Health Perspectives. ISSN 0091-6765. 123(6), p. 525–533. doi: 10.1289/ehp.1408095. Full text in Research Archive
• Langballe, Ellen Melbye; Ask, Helga; Holmen, Jostein; Stordal, Eystein; Saltvedt, Ingvild & Selbæk, Geir [Show all 10 contributors for this article] (2015). Alcohol consumption and risk of dementia up to 27 years later in a large, population-based sample: the HUNT study, Norway. European Journal of Epidemiology (EJE). ISSN 0393-2990. 30(9), p. 1049–1056. doi: 10.1007/s10654-015-0029-2. Full text in Research Archive Show summary

  The relationship between alcohol consumption and dementia risk is unclear. This investigation estimates the association between alcohol consumption reported in a population-based study in the mid-1980s and the risk for dementia up to 27 years later. The entire adult population in one Norwegian county was invited to the Nord-Trøndelag Health Study during 1984–1986 (HUNT1): 88 % participated. The sample used in this study includes HUNT1 participants born between 1905 and 1946 who completed the questionnaire assessing alcohol consumption. A total of 40,435 individuals, of whom 1084 have developed dementia, are included in the analysis adjusted for age, sex, years of education, hypertension, obesity, smoking, and symptoms of depression. When adjusting for age and sex, and compared to reporting consumption of alcohol 1–4 times during the last 14 days (drinking infrequently), both abstaining from alcohol and reporting consumption of alcohol five or more times (drinking frequently) were statistically significantly associated with increased dementia risk with hazard ratios of 1.30 (95 % CI 1.05–1.61) and 1.45 (1.11–1.90), respectively. In the fully adjusted analysis, drinking alcohol frequently was still significantly associated with increased dementia risk with a hazard ratio of 1.40 (1.07–1.84). However, the association between dementia and abstaining from alcohol was no longer significant (1.15, 0.92–1.43). Equivalent results for Alzheimer’s disease and vascular dementia indicated the same patterns of associations. When adjusting for other factors associated with dementia, frequent alcohol drinking, but not abstaining from alcohol, is associated with increased dementia risk compared to drinking alcohol infrequently.

• Aarhus, Lisa; Tambs, Kristian; Nafstad, Per; Bjørgan, Eskil & Engdahl, Bo Lars (2015). Childhood sensorineural hearing loss: effects of combined exposure with aging or noise exposure later in life. European Archives of Oto-Rhino-Laryngology. ISSN 0937-4477. doi: 10.1007/s00405-015-3649-y.
• Magnus, Maria Christine; Håberg, Siri Eldevik; Karlstad, Øystein; Nafstad, Per; London, Stephanie J & Nystad, Wenche (2015). Grandmother's smoking when pregnant with the mother and asthma in the grandchild: the Norwegian Mother and Child Cohort Study. Thorax. ISSN 0040-6376. 70(3), p. 237–243. doi: 10.1136/thoraxjnl-2014-206438.
• Magnus, Maria Christine; Stigum, Hein; Håberg, Siri Eldevik; Nafstad, Per; London, Stephanie J. & Nystad, Wenche (2015). Peak weight an heavy velocity to age 36 months and asthma development: the Norwegian Mother and Child Cohort Study. PLOS ONE. ISSN 1932-6203. 10:e0116362(1), p. 1–13. doi: 10.1371/journal.pone.0116362. Full text in Research Archive
• Beelen, R; Stafogguiia, M; Raaschou-Nielsen, O; Andersen, ZJ; Xun, WW & Katsouyanni, K [Show all 74 contributors for this article] (2014). Long-term exposure to air pollution and cardiovascular mortality: An analysis of 22 European cohorts. Epidemiology. ISSN 1044-3983. 25(3), p. 368–378. doi: 10.1097/EDE.0000000000000076.
• Wang, M; Beelen, R; Bellander, T; Birk, M; Cesaroni, G & Cirach, M [Show all 41 contributors for this article] (2014). Performance of multi-city land use regression models for nitrogen dioxide and fine particles. Environmental Health Perspectives. ISSN 0091-6765. 122(8), p. 843–849. doi: 10.1289/ehp.1307271. Full text in Research Archive
• Bianba, X; Berntsen, Sveinung; Andersen, Lars Bo; Stigum, Hein; Ouzhuluobu, O. & Nafstad, Per [Show all 8 contributors for this article] (2014). Exercise capacity and selected physiological factors by ancestry and residential altitude: Cross-sectional studies of 9-10-year-old children in Tibet. High Altitude Medicine & Biology. ISSN 1527-0297. 15(2), p. 162–169. doi: 10.1089/ham.2013.1084.
• Dimakopoulou, K; Samoli, E; Beelen, R; Stafoggia, M; Andersen, ZJ & Hoffmann, B [Show all 59 contributors for this article] (2014). Air pollution and nonmalignant respiratory mortality in 16 cohorts within the ESCAPE project. American Journal of Respiratory and Critical Care Medicine. ISSN 1073-449X. 189(6), p. 684–696. doi: 10.1164/rccm.201310-1777OC.
• Beelen, Rob; Raaschou-Nielsen, Ole; Stafoggia, Massimo; Andersen, Zorana Jovanovic; Weinmayr, Gudrun & Hoffmann, Barbara [Show all 76 contributors for this article] (2014). Effects of long-term exposure to air pollution on natural-cause mortality: An analysis of 22 European cohorts within the multicentre ESCAPE project. The Lancet. ISSN 0140-6736. 383(9919), p. 785–795. doi: 10.1016/S0140-6736(13)62158-3.
• Strand, Bjørn Heine; Langballe, Ellen Melbye; Rosness, Tor Atle; Bergem, Astrid Liv Mina; Engedal, Knut Arne & Nafstad, Per [Show all 10 contributors for this article] (2014). Age, education and dementia related deaths. The Norwegian Counties Study and The Cohort of Norway. Journal of the Neurological Sciences. ISSN 0022-510X. 345(1-2), p. 75–82. doi: 10.1016/j.jns.2014.07.009.
• Magnus, Maria Christine; deRoo, Lisa; Magnus, Per; Nafstad, Per; Nystad, Wenche & London, Stephanie J (2014). Prospective Study of Maternal Alcohol Intake During Pregnancy or Lactation and Risk of Childhood Asthma: The Norwegian Mother and Child Cohort Study. Alcoholism: Clinical and Experimental Research. ISSN 0145-6008. 38(4), p. 1002–1011. doi: 10.1111/acer.12348.
• Strand, Bjørn Heine; Langballe, Ellen Melbye; Hjellvik, Vidar; Handal, Marte; Næss, Øyvind & Knudsen, Gun Peggy [Show all 15 contributors for this article] (2013). Midlife vascular risk factors and their association with dementia deaths: Results from a Norwegian prospective study followed up for 35 years. Journal of Neurological Sciences. ISSN 1302-1664. 324(1-2), p. 124–130. doi: 10.1016/j.jns.2012.10.018.
• Magnus, Maria Christine; Stene, Lars Christian; Håberg, Siri Eldevik; Nafstad, Per; Stigum, Hein & London, Stephanie J [Show all 7 contributors for this article] (2013). Prospective study of maternal mid-pregnancy 25-hydroxyvitamin D level and early childhood respiratory disorders. Paediatric and Perinatal Epidemiology. ISSN 0269-5022. 27(6), p. 532–541. doi: 10.1111/ppe.12080.
• Raaschou-Nielsen, Ole; Andersen, Zorana J; Beelen, Rob; Samoli, Evangelia; Stafoggia, Massimo & Weinmayr, Gudrun [Show all 59 contributors for this article] (2013). Air pollution and lung cancer incidence in 17 European cohorts: prospective analyses from the European Study of Cohorts for Air Pollution Effects (ESCAPE). The Lancet Oncology. ISSN 1470-2045. 14(9), p. 813–822. doi: 10.1016/S1470-2045(13)70279-1.
• Sherpa, Lhamo Yangchen; Deji, -; Stigum, Hein; Chongsuvivatwong, Virasakdi; Nafstad, Per & Bjertness, Espen (2013). Prevalence of Metabolic Syndrome and Common Metabolic Components in High Altitude Farmers and Herdsmen at 3700 m in Tibet. High Altitude Medicine & Biology. ISSN 1527-0297. 14(1), p. 37–44. doi: 10.1089/ham.2012.1051.
• Zong, Yang; Berntsen, Sveinung; Bjertness, Espen; Stigum, Hein; Gonggalanzi, X & Bianba, X [Show all 7 contributors for this article] (2013). Lung Function Among 9-to 10-Year-Old Tibetan and Han Chinese Schoolchildren Living at Different Altitudes in Tibet. High Altitude Medicine & Biology. ISSN 1527-0297. 14(1), p. 31–36. doi: 10.1089/ham.2012.1034.
• Håberg, Siri Eldevik; Trogstad, Lill; Gunnes, Nina; Wilcox, AJ; Gjessing, Håkon K. & Samuelsen, Sven Ove [Show all 19 contributors for this article] (2013). Risk of Fetal Death after Pandemic Influenza Virus Infection or Vaccination. New England Journal of Medicine. ISSN 0028-4793. 368(4), p. 333–340. doi: 10.1056/NEJMoa1207210.
• Madsen, Christian; Rosland, Pål; Hoff, Dominic Anthony; Nystad, Wenche; Nafstad, Per & Næss, Øyvind (2012). The short-term effect of 24-h average and peak air pollution on mortality in Oslo, Norway. European Journal of Epidemiology (EJE). ISSN 0393-2990. 27(9), p. 717–727. doi: 10.1007/s10654-012-9719-1.
• Magnus, Maria Christine; VESTRHEIM, DIDRIK FRIMANN; Nystad, Wenche; Håberg, Siri Eldevik; Stigum, Hein & London, Stephanie J. [Show all 10 contributors for this article] (2012). Decline in early childhood respiratory tract infections in the Norwegian Mother and Child Cohort Study after introduction of pneumococcal conjugate vaccination. The Pediatric Infectious Disease Journal. ISSN 0891-3668. 31(9), p. 951–955. doi: 10.1097/INF.0b013e31825d2f76.
• Karlstad, Øystein; Nafstad, Per; Tverdal, Aage; Skurtveit, Svetlana & Furu, Kari (2012). Comorbidities in an asthma population 8-29 years old: a study from the Norwegian Prescription Database. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 21(10), p. 1045–1052. doi: 10.1002/pds.2233. Full text in Research Archive
• Yangzong, Yangzong; Shi, ZM; Nafstad, Per; Lund Håheim, Lise ; Luobu, OZ & Bjertness, Espen (2012). The prevalence of childhood asthma in China: a systematic review. BMC Public Health. ISSN 1471-2458. 12. doi: 10.1186/1471-2458-12-860.
• Magnus, Maria Christine; Håberg, Siri Eldevik; Stigum, Hein; Nafstad, Per; London, SJ & Vangen, Siri [Show all 7 contributors for this article] (2011). Delivery by cesarean section and early childhood respiratory symptoms and disorders the Norwegian Mother and Child Cohort Study. American Journal of Epidemiology. ISSN 0002-9262. 174(11), p. 1275–1285. doi: 10.1093/aje/kwr242.
• Polańska, Kinga; Hanke, Wojciech; Jurewicz, Joanna; Sobala, Wojciech; Madsen, Christian & Nafstad, Per [Show all 7 contributors for this article] (2011). Polish mother and child cohort study (REPRO_PL) - Methodology of follow-up of the children. International Journal of Occupational Medicine and Environmental Health. ISSN 1232-1087. 24(4), p. 391–398. doi: 10.2478/s13382-011-0026-y.
• Madsen, Christian; Gehring, Ulrike; Håberg, Siri Eldevik; Nafstad, Per; Meliefste, Kees & Nystad, Wenche [Show all 8 contributors for this article] (2011). Comparison of land-use regression models for predicting spatial NOx contrasts over a three year period in Oslo, Norway. Atmospheric Environment. ISSN 1352-2310. 45(21), p. 3576–3583. doi: 10.1016/j.atmosenv.2011.03.069.
• Sherpa, Lhamo Yangchen; Deji, -; Stigum, Hein; Chongsuvivatwong, Virasakdi; Luobu, Ouzhu & Thelle, Dag Steinar [Show all 8 contributors for this article] (2011). Lipid Profile and Its Association with Risk Factors for Coronary Heart Disease in the Highlanders of Lhasa, Tibet. High Altitude Medicine & Biology. ISSN 1527-0297. 12(1), p. 57–63. doi: 10.1089/ham.2010.1050.
• Karlstad, Øystein; Tverdal, Aage; Skurtveit, Svetlana; Nafstad, Per & Furu, Kari (2011). A prospective study of asthma and subsequent use of hypnotics in young adults. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 20(4), p. 370–377. doi: 10.1002/pds.2101.
• Furu, Kari; Karlstad, Øystein; Skurtveit, Svetlana; Håberg, Siri Eldevik; Nafstad, Per & London, Stephanie J [Show all 7 contributors for this article] (2011). High validity of mother-reported use of antiasthmatics among children: a comparison with a population-based prescription database. Journal of Clinical Epidemiology. ISSN 0895-4356. 64(8), p. 878–884. doi: 10.1016/j.jclinepi.2010.10.014.
• Hancock, Dana B; Håberg, Siri Eldevik; Furu, Kari; Whitworth, Kristina W; Nafstad, Per & Nystad, Wenche [Show all 7 contributors for this article] (2011). Oral contraceptive pill use before pregnancy and respiratory outcomes in early childhood. Pediatric Allergy and Immunology. ISSN 0905-6157. 22(5), p. 528–536. doi: 10.1111/j.1399-3038.2010.01135.x.
• Håberg, Siri Eldevik; Bentdal, YE; London, SJ; Kværner, KJ; Nystad, Wenche & Nafstad, Per (2010). Prenatal and postnatal parental smoking and acute otitis media in early childhood. Acta Paediatrica. ISSN 0803-5253. 99(1), p. 99–105. doi: 10.1111/j.1651-2227.2009.01506.x.
• Karlstad, Øystein; Nafstad, Per; Tverdal, Aage; Skurtveit, Svetlana & Furu, Kari (2010). Prevalence, incidence and persistence of anti-asthma medication use in 2-to 29-year-olds: a nationwide prescription study. European Journal of Clinical Pharmacology. ISSN 0031-6970. 66(4), p. 399–406. doi: 10.1007/s00228-009-0749-x.
• Madsen, Christian; Gehring, Ulrike; Walker, Sam-Erik; Brunekreef, Bert; Stigum, Hein & Næss, Øyvind Erik [Show all 7 contributors for this article] (2010). Ambient air pollution exposure, residential mobility and term birth weight in Oslo, Norway. Environmental Research. ISSN 0013-9351. 110(4), p. 363–371. doi: 10.1016/j.envres.2010.02.005.
• Bentdal, Yngvild E; Håberg, Siri Eldevik; Karevold, Gunnhild; Stigum, Hein; Kværner, Kari J & Nafstad, Per (2010). Birth characteristics and acute otitis media in early life. International Journal of Pediatric Otorhinolaryngology. ISSN 0165-5876. 74(2), p. 168–172. doi: 10.1016/j.ijporl.2009.11.001.
• Oftedal, Bente Margaret; Nystad, Wenche; Brunekreef, Bert & Nafstad, Per (2009). Long-term traffic-related exposures and asthma onset in schoolchildren in Oslo, Norway. Environmental Health Perspectives. ISSN 0091-6765. 117(5), p. 839–844. doi: 10.1289/ehp.11491.
• Oftedal, Bente Margaret; Walker, Sam-Erik; Gram, Frederick; McInnes, Harold & Nafstad, Per (2009). Modelling long-term averages of local ambient air pollution in Oslo, Norway: evaluation of nitrogen dioxide, PM10 and PM2.5. International Journal of Environment and Pollution. ISSN 0957-4352. 36(1-3), p. 110–126.
• Håberg, Siri Eldevik; London, SJ; Stigum, Hein; Nafstad, Per & Nystad, Wenche (2009). Folic acid supplements in pregnancy and early childhood respiratory health. Archives of Disease in Childhood. ISSN 0003-9888. 94(3), p. 180–184. doi: 10.1136/adc.2008.142448.
• Håberg, Siri Eldevik; Stigum, Hein; London, Stephanie J; Nystad, Wenche & Nafstad, Per (2009). Maternal obesity in pregnancy and respiratory health in early childhood. Paediatric and Perinatal Epidemiology. ISSN 0269-5022. 23(4), p. 352–362. doi: 10.1111/j.1365-3016.2009.01034.x.
• Karevold, Gunnhild; Bentdal, Yngvild E; Nafstad, Per & Kvaerner, Kari Jorunn (2009). Surgery for otitis media and infectious susceptibility in 10-year old school children. International Journal of Pediatric Otorhinolaryngology. ISSN 0165-5876. 73(4), p. 603–606. doi: 10.1016/j.ijporl.2008.12.007.
• Håheim, Lise Lund; Nafstad, P; Olsen, Ingar; Schwarze, PE & Rønningen, Kjersti Skjold (2009). C-reactive protein variations for different chronic somatic disorders. Scandinavian Journal of Public Health. ISSN 1403-4948. 37(6), p. 640–646. doi: 10.1177/1403494809104358.
• Oftedal, Bente Margaret; Brunekreef, Bert; Nystad, Wenche; Madsen, Christian; Walker, Sam-Erik & Nafstad, Per (2008). Residential outdoor air pollution and lung function in schoolchildren. Epidemiology. ISSN 1044-3983. 19(1), p. 129–137. doi: 10.1097/EDE.0b013e31815c0827.

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• Parr, Christine Louise; Nystad, Wenche; Karlstad, Øystein; Øymar, Knut Asbjørn Alexander; Langhammer, Arnulf & Nafstad, Per [Show all 7 contributors for this article] (2022). Ten-year trends of national healthcare costs of asthma, allergic rhinitis, and atopic eczema in 3 million Norwegians. Allergy. European Journal of Allergy and Clinical Immunology. ISSN 0105-4538. doi: 10.1111/all.15225.
• Bernhoft, Aksel; Aamodt, Geir; Nafstad, Per; Skalleberg, Katrine; Nordh, Helena & Butenschøn, Peter [Show all 12 contributors for this article] (2018). Grønn helse i byen - hva betyr grønne omgivelser og matproduksjon i byer for vår helse? In Det Norske Videnskaps-Akademi, Det Norske Videnskaps-Akademi (Eds.), Årbok 2017. Novus Forlag. ISSN 978-82-7099-914-9. p. 319–333.
• Lund Håheim, Lise; Nafstad, Per; Schwarze, Per Everhard; Olsen, Ingar; Rønningen, Kjersti Skjold & Thelle, Dag Steinar (2018). Predictors of stroke mortality. A comparison of the Oslo-study 1972/73 and the Oslo II-study in 2000.
• Parr, Christine Louise; Page, Christian; Holvik, Kristin; Sandanger, Torkjel M; Nøst, Therese Haugdahl & Magnus, Maria Christine [Show all 13 contributors for this article] (2017). Pregnancy fatty acid status and newborn DNA methylation: the MoBa pregnancy cohort.
• Gonggalanzi, X & Nafstad, Per (2017). Response to letter to the editor regarding "Acute mountain sickness among tourists visiting the high-altitude city of Lhasa, Tibet, China at 3658 m above sea level: A cross-sectional study". Archives of Public Health. ISSN 0778-7367. 75(20). doi: 10.1186/s13690-017-0188-6.
• Håberg, Siri Eldevik; Trogstad, Lill; Gunnes, Nina; Wilcox, Allen J; Gjessing, Håkon K. & Samuelsen, Sven Ove [Show all 19 contributors for this article] (2013). Risk of Fetal Death After Pandemic Influenza Virus Infection or Vaccination EDITORIAL COMMENT. Obstetrical and Gynecological Survey. ISSN 0029-7828. 68(5), p. 348–349. doi: 10.1097/01.ogx.0000430377.29993.2b.
• Magnus, Maria Christine; Nafstad, Per; Stene, Lars Christian; Håberg, Siri Eldevik; London, Stephanie J. & Stigum, Hein [Show all 7 contributors for this article] (2013). Maternal Vitamin D Status During Pregnancy and Asthma in the Offspring Among Participants in the Norwegian Mother and Child Cohort Study. Journal of Allergy and Clinical Immunology. ISSN 0091-6749. 131(2), p. AB128–AB128.
• Håberg, Siri Eldevik; Trogstad, Lill; Gunnes, Nina; Gjessing, Håkon K.; Samuelsen, Sven Ove & Cappelen, Inger [Show all 17 contributors for this article] (2012). The 2009 Influenza Pandemic, Vaccination during Pregnancy and Fetal Death: A National Registry-Based Study in Norway. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 21, p. 382–382.
• Oftedal, Bente Margaret; Panasevich, Sviatlana; Nafstad, Per; Schwarze, Per E & Aasvang, Gunn Marit (2011). Road traffic noise, air pollution and hypertension in a population-based sample in Oslo. Norsk Epidemiologi, Supplement. ISSN 0803-4206. 21, p. 36–36.
• Hancock, DB; Håberg, Siri Eldevik; Furu, Kari; Whitworth, Kristina W; Nafstad, Per & Nystad, Wenche [Show all 7 contributors for this article] (2011). Oral contraceptive use before pregnancy and respiratory outcomes in the offspring: comparison of Estrogen-Progestin combined pills and Progestin-Only pills. Journal of Allergy and Clinical Immunology. ISSN 0091-6749. 127(2), p. AB173–AB173.
• Håberg, Siri Eldevik; London, Stephanie J.; Nafstad, Per; Nilsen, Roy Miodini; Ueland, Per Magne & Vollset, Stein Emil [Show all 7 contributors for this article] (2011). Maternal folate levels in pregnancy and asthma in children at age 3 years. Journal of Allergy and Clinical Immunology. ISSN 0091-6749. 127(1), p. 262–264. doi: 10.1016/j.jaci.2010.10.004.
• Håberg, Siri Eldevik; London, SJ; Ueland, Per Magne; Vollset, Stein Emil; Nilsen, Rune & Nafstad, Per [Show all 7 contributors for this article] (2010). Maternal Folate Levels in Pregnancy and Asthma at 3 Years of Age. Journal of Allergy and Clinical Immunology. ISSN 0091-6749. 125(2), p. AB128–AB128.
• Karlstad, Øystein; Tverdal, Aage; Skurtveit, Svetlana; Nafstad, Per & Furu, Kari (2010). A prospective study of self-reported asthma and subsequent use of hypnotics.
• Karlstad, Øystein; Skurtveit, Svetlana; Nafstad, Per; Tverdal, Aage & Furu, Kari (2010). Comorbidities in the treated asthma population under 30 years of age- a prescription study from the Norwegian Prescription Database.
• Karlstad, Øystein; Skurtveit, Svetlana; Tverdal, Aage; Nafstad, Per & Furu, Kari (2010). A prospective study of asthma and subsequent use of hypnotics. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 19, p. s248–s248. doi: 10.1002/pds.2019.
• Håheim, Lise Lund; Nafstad, Per; Olsen, Ingar; Schwarze, Per & Rønningen, Kjersti Skjold (2010). C-reaktivt protein (CRP) varierer ved forskjellige kroniske lidelser. Den norske tannlegeforenings tidende. ISSN 0029-2303. 120(1).
• Furu, Kari; Karlstad, Øystein; Skurtveit, Svetlana ; Håberg, Siri Eldevik; Nafstad, Per & London, Stephanie [Show all 7 contributors for this article] (2009). The validity of mother-reported asthma and asthma medication use in children. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 18. doi: 10.1002/pds.
• Oftedal, Bente Margaret; Aasvang, Gunn Marit; Biswas, Ruhina Tasmin; Nafstad, Per; Nystad, Wenche & Schwarze, Per E (2009). Exposure to long-term traffic noise, noise annoyance and blood pressure. Norsk Epidemiologi. ISSN 0803-2491. 19.
• Biswas, Ruhina Tasmin; Oftedal, Bente Margaret; Aasvang, Gunn Marit; Schwarze, Per E; Nafstad, Per & Knardahl, Stein (2009). Noise-annoyance from traffic and plasma cortisol in a population based study. Norsk Epidemiologi. ISSN 0803-2491. 19.
• Madsen, Christian; Gehring, U; Walker, SE; Brunekreef, B; Stigum, Hein & Næss, Øyvind Erik [Show all 7 contributors for this article] (2009). Ambient Air Pollution Exposure, Residential Mobility and Term Birth Weight in Oslo, Nonway. Epidemiology. ISSN 1044-3983. 20(6), p. S151–S151.
• Oftedal, Bente Margaret; Aasvang, Gunn Marit; Biswas, Ruhina Tasmin; Watanabe, Sachiko; Nafstad, Per & Nystad, Wenche [Show all 7 contributors for this article] (2009). Long-term exposure to residential noise and air pollution and risk of cardiovascular diseases in Oslo, Norway- Project design and exposure assessment. Epidemiology. ISSN 1044-3983. 20(6), p. S204–S204. doi: 10.1097/01.ede.0000362685.98715.98.
• Karlstad, Øystein; Furu, Kari; Skurtveit, Svetlana ; Håberg, Siri Eldevik; Nafstad, Per & London, Stephanie J [Show all 7 contributors for this article] (2009). The validity of mother-reported asthma and asthma medication use in 7 year old children.
• Karlstad, Øystein; Tverdal, Aage; Skurtveit, Svetlana ; Nafstad, Per & Furu, Kari (2008). Prevalence, incidence and persistence to inhaled anti-asthma medications in individuals aged <30 years in Norway. Pharmacoepidemiology and Drug Safety. ISSN 1053-8569. 17. doi: 10.1002/pds.1631.
• Løwer, Hege Line Magnussen; Aavitsland, Preben; Skjeldestad, Finn Egil & Nafstad, Per (2016). Data Quality in Norwegian Surgical Site Infection Surveillance: Implementation and validation of a national system for surveillance of surgical site infections in Norway. Universitetet i Oslo. ISSN 9788283331332.
• Aarhus, Lisa; Engdahl, Bo Lars; Tambs, Kristian & Nafstad, Per (2016). Follow-up of childhood hearing disorders: hearing loss, tinnitus and dizziness in adulthood. Universitetet i Oslo. ISSN 9788283331455.
• Fleten, Anne Caroline; Nafstad, Per; Stigum, Hein; Brunborg, Gunnar; Schwarze, Per E & Aasvang, Gunn Marit [Show all 8 contributors for this article] (2009). Miljørettet helsevern : kjemiske, fysiske og biologiske miljøforholds betydning for helse i vårt land og fordelingen av disse. Nasjonalt folkehelseinstitutt. ISSN 978-82-8082-326-7. Full text in Research Archive
• Madsen, Christian & Nafstad, Per (2009). Urban environmental exposures and potential markers of risk for cardiovascular disease. Unipub forlag. ISSN 978-82-8072-967-5.

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