Ivar Sønbø Kristiansen

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Username
Visiting address Forskningsveien 3A Harald Schjelderups hus 0373 Oslo
Postal address Postboks 1089 Blindern 0317 Oslo

Academic interests

  • Economic evaluation of health care programmes
  • Modeling of chronic diseases
  • Risk communication

Courses taught

  • HMM4401: Health and Medicine
  • HMM4301: Optimal allocation of health care resources and economic evaluation of health care technologies
  • HØKON4102: Cost-effectiveness analysis (in Norwegian)
  • HME4301: Advanced course in economic evaluation of health care programmes
  • Various other teaching and lecturing activities

Background

  • PhD, University of Tromsø, Norway, 1996
  • Master of Public Health, Harvard University, 1986
  • Board certified specialist Community Medicine, 1985
  • MD University of Oslo, 1966
  • High School Exam, Drammen, Norway 1966

Awards

Positions held

  • Professor at Department of Health Management and Health Economics, University of Oslo, Norway, 2005-
  • Senior researcher, The Norwegian Knowledge Centre for the Health Services, 2000-2005
  • Senior researcher, Institute of Public Health, University of Southern Denmark at Odense, 1997-2009
  • Senior researcher, the Norwegian Institute of Public Health, 1995-1997
  • Assistant professor, Institute of Community Medicine, University of Tromsø, Norway, 1987-94
  • Deputy County Medical Officer, Troms County, Norway, 1983-87
  • Community medical officer and general practitioner, Kværfjord municipality, 1978-83 and Aure municipality, 1974-78

Partners

  • Department of Biostatistics, University of Århus, Denmark
  • Institute of Public Health, University of Southern Denmark at Odense
  • Epidemiology & Radiology of the Erasmus University Medical Center in Rotterdam, the Netherlands
  • Department of Health Policy and Management, Harvard School of Public Health
  • Department of Primary Care & Public Health, Cardiff University
  • Unit of Public Health, University of Glasgow

Publications

  • Nielsen, Jesper B.; Kristiansen, Ivar Sønbø & Thapa, Subash (2022). Prolongation of disease-free life: When is the benefit sufficient to warrant the effort of taking a preventive medicine? Preventive Medicine. ISSN 0091-7435. 154. doi: 10.1016/j.ypmed.2021.106867.
  • Cyr, Pascale Renée; Pedersen, Kine; Iyer, Anita Lakshmi; Bundorf, Kate; Goldhaber-Fiebert, Jeremy & Gyrd-Hansen, Dorte [Show all 8 contributors for this article] (2021). Providing more balanced information on the harms and benefits of cervical cancer screening: A randomized survey among US and Norwegian women. Preventive Medicine Reports. ISSN 2211-3355. doi: 10.1016/j.pmedr.2021.101452. Full text in Research Archive
  • Bugge, Christoffer; Kaasa, Stein; Sæther, Erik Magnus; Melberg, Hans Olav & Kristiansen, Ivar Sønbø (2021). What are determinants of utilisation of pharmaceutical anticancer treatment during the last year of life in Norway? A retrospective registry study. BMJ Open. ISSN 2044-6055. 11(9), p. 1–7. doi: 10.1136/bmjopen-2021-050564.
  • Bugge, Christoffer; Sæther, Erik Magnus & Kristiansen, Ivar Sønbø (2021). Men receive more end-of-life cancer hospital treatment than women: fact or fiction? Acta Oncologica. ISSN 0284-186X. 60(8), p. 984–991. doi: 10.1080/0284186X.2021.1917000.
  • Oteiza, Francisco; Løyland, Hanna Isabel; Bugge, Christoffer; Kristiansen, Ivar Sønbø & Støvring, Henrik (2021). Persistence of statin treatment – the impact of analytic method when estimating drug survival. Norsk Epidemiologi. ISSN 0803-2491. 29(1-2), p. 107–115. doi: 10.5324/nje.v29i1-2.4052.
  • Bugge, Christoffer; Brustugun, Odd Terje; Sæther, Erik Magnus & Kristiansen, Ivar Sønbø (2021). Phase- and gender-specific, lifetime, and future costs of cancer: A retrospective population-based registry study. Medicine. ISSN 0025-7974. 100(26), p. 1–8. doi: 10.1097/MD.0000000000026523.
  • Bugge, Christoffer; Sæther, Erik Magnus; Brustugun, Odd & Kristiansen, Ivar Sønbø (2021). Societal cost of cancer in Norway –Results of taking a broader cost perspective. Health Policy. ISSN 0168-8510. doi: 10.1016/j.healthpol.2021.05.008.
  • Lousdal, Mette Lise; Lash, Timothy L.; Flanders, W Dana; Brookhart, M Alan; Kristiansen, Ivar Sønbø & Kalager, Mette [Show all 7 contributors for this article] (2020). Negative controls to detect uncontrolled confounding in observational studies of mammographic screening comparing participants and non-participants. International Journal of Epidemiology. ISSN 0300-5771. 49(3), p. 1032–1042. doi: 10.1093/ije/dyaa029.
  • Hovland, Ragnar; Bremer, Sara; Frigaard, Christine; Henjum, Solveig; Faksvåg, Per Kristian & Sæther, Erik Magnus [Show all 7 contributors for this article] (2019). Effect of a pharmacist-led intervention on adherence among patients with a first-time prescription for a cardiovascular medicine: a randomized controlled trial in Norwegian pharmacies. International Journal of Pharmacy Practice (IJPP). ISSN 0961-7671. doi: 10.1111/ijpp.12598.
  • Hylin, Hannah Douglass; Thrane, Helene; Pedersen, Kine; Kristiansen, Ivar Sønbø & Burger, Emily (2019). The healthcare costs of treating human papillomavirus-related cancers in Norway. BMC Cancer. ISSN 1471-2407. 19(1). doi: 10.1186/s12885-019-5596-2. Full text in Research Archive
  • Kristiansen, Ivar Sønbø; Bråten, Ragnhild Haugli; Jørstad, Øystein Kalsnes; Moe, Morten Carsten & Sæther, Erik Magnus (2019). Intravitreal therapy for retinal diseases in Norway 2011-2015. Acta Ophthalmologica. ISSN 1755-375X. p. 1–7. doi: 10.1111/aos.14262. Full text in Research Archive
  • Røssell Johansen, Eeva-Liisa; Lousdal, Mette Lise; Vinther Skriver, Mette; Væth, Michael; Kristiansen, Ivar Sønbø & Støvring, Henrik (2019). Predicting Difference in Mean Survival Time from Reported Hazard Ratios for Cancer Patients. Medical decision making. ISSN 0272-989X. 39(3), p. 228–238. doi: 10.1177/0272989X19832879.
  • Sengupta, Kaushik; Thygesen, Lau Caspar; Kristiansen, Ivar Sønbø; Bolin, Kristian; Pukkala, Eero & Emneus, Martha [Show all 8 contributors for this article] (2019). Utilization of etoricoxib in dental patients in the Nordic countries: a population-based register study. Acta Odontologica Scandinavica. ISSN 0001-6357. 77(8), p. 584–591. doi: 10.1080/00016357.2019.1622037.
  • Wisløff, Torbjørn; Mundal, Liv; Retterstøl, Kjetil; Igland, Jannicke & Kristiansen, Ivar Sønbø (2019). Economic evaluation of lipid lowering with PCSK9 inhibitors in patients with familial hypercholesterolemia: Methodological aspects. Atherosclerosis. ISSN 0021-9150. 287, p. 140–146. doi: 10.1016/j.atherosclerosis.2019.06.900. Full text in Research Archive
  • Edwards, Christina Hansen; Tomba, Gianpaolo Scalia; Kristiansen, Ivar Sønbø; White, Richard Aubrey & De Blasio, Birgitte Freiesleben (2019). Evaluating costs and health consequences of sick leave strategies against pandemic and seasonal influenza in Norway using a dynamic model. BMJ Open. ISSN 2044-6055. 9. doi: 10.1136/bmjopen-2018-027832. Full text in Research Archive
  • Iyer, Anita Lakshmi; Bundorf, M. Kate; Gyrd-Hansen, Dorte; Goldhaber-Flebert, Jeremy D.; Cyr, Pascale-Renée & Kristiansen, Ivar Sønbø (2019). How does information on the harms and benefits of cervical cancer screening alter the intention to be screened?: a randomized survey of Norwegian women. European Journal of Cancer Prevention. ISSN 0959-8278. 28(2), p. 87–95. doi: 10.1097/CEJ.0000000000000436.
  • Inderhaug, Eivind; Schelp, Carl Henrik; Glambek, Inge & Kristiansen, Ivar Sønbø (2018). Cost-effectiveness analysis of five procedures for great saphenous vein reflux in a Norwegian healthcare setting or societal setting. American Journal of Sports Medicine. ISSN 0363-5465. 46(4), p. 826–831. doi: 10.1177/2050312118801709.
  • Bugge, Christoffer; Sæther, Erik Magnus; Pahle, Andreas; Halvorsen, Sigrun & Kristiansen, Ivar Sønbø (2018). Diagnosing heart failure with NT-proBNP point-of-care testing: lower costs and better outcomes. A decision analytic study. British Journal of General Practice. ISSN 0960-1643. doi: 10.3399/bjgpopen18X101596.
  • Møller, Mette; Lousdal, Mette Lise; Kristiansen, Ivar Sønbø & Støvring, Henrik (2018). Effect of organized mammography screening on breast cancer mortality: A population-based cohort study in Norway. International Journal of Cancer. ISSN 0020-7136. p. 1–10. doi: 10.1002/ijc.31832.
  • Stavem, Knut; Augestad, Liv Ariane; Kristiansen, Ivar Sønbø & Rand, Kim (2018). General population norms for the EQ-5D-3 L in Norway: comparison of postal and web surveys. Health and Quality of Life Outcomes. ISSN 1477-7525. 16(204), p. 1–10. doi: 10.1186/s12955-018-1029-1. Full text in Research Archive
  • Lousdal, Mette Lise; Møller, Mette H.; Kristiansen, Ivar Sønbø; Kalager, Mette; Wisløff, Torbjørn & Støvring, Henrik (2018). The Screening Illustrator: separating the effects of lead-time and overdiagnosis in mammography screening. European Journal of Public Health. ISSN 1101-1262. 28(6), p. 1138–1142. doi: 10.1093/eurpub/cky085.
  • Korman, Max; Retterstøl, Kjetil; Kristiansen, Ivar Sønbø & Wisløff, Torbjørn (2018). Are PCSK9 Inhibitors Cost Effective? PharmacoEconomics (Auckland). ISSN 1170-7690. 36(9), p. 1031–1041. doi: 10.1007/s40273-018-0671-0. Full text in Research Archive
  • Mundal, Liv; Igland, Jannicke; Veierød, Marit Bragelien; Holven, Kirsten Bjørklund; Ose, Leiv & Selmer, Randi [Show all 11 contributors for this article] (2018). Impact of age on excess risk of coronary heart disease in patients with familial hypercholesterolaemia. Heart. ISSN 1355-6037. 104, p. 1600–1607. doi: 10.1136/heartjnl-2017-312706. Full text in Research Archive
  • Pedersen, Kine; Fogelberg, Sara; Thamsborg, Lise H.; Clements, Mark; Nygård, Mari & Kristiansen, Ivar Sønbø [Show all 10 contributors for this article] (2018). An overview of cervical cancer epidemiology and prevention in Scandinavia. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 97(7), p. 795–807. doi: 10.1111/aogs.13313. Full text in Research Archive
  • Pedersen, Kine; Burger, Emily; Nygård, Mari; Kristiansen, Ivar Sønbø & Kim, Jane J. (2018). Adapting cervical cancer screening for women vaccinated against human papillomavirus infections: The value of stratifying guidelines. European Journal of Cancer. ISSN 0959-8049. 91, p. 68–75. doi: 10.1016/j.ejca.2017.12.018. Full text in Research Archive
  • Lousdal, Mette Lise; Kristiansen, Ivar Sønbø; Møller, Bjørn & Støvring, Henrik (2017). Predicting Mean Survival Time from Reported Median Survival Time for Cancer Patients. Medical decision making. ISSN 0272-989X. 37(4), p. 391–402. doi: 10.1177/0272989X16655341.
  • Burger, Emily; Pedersen, Kine; Sy, Stephen; Kristiansen, Ivar Sønbø & Kim, Jane J (2017). Choosing wisely: a model-based analysis evaluating the trade-offs in cancer benefit and diagnostic referrals among alternative HPV testing strategies in Norway. British Journal of Cancer. ISSN 0007-0920. 117(6), p. 783–790. doi: 10.1038/bjc.2017.248. Full text in Research Archive
  • Andreassen, A Elizabeth S; Jacobsen, Caroline M; De Blasio, Birgitte Freiesleben; White, Richard; Kristiansen, Ivar Sønbø & Elstrøm, Petter (2017). The impact of methicillin-resistant S. aureus on length of stay, readmissions and costs: a register based case-control study of patients hospitalized in Norway. Antimicrobial Resistance and Infection Control. ISSN 2047-2994. 6. doi: 10.1186/s13756-017-0232-x. Full text in Research Archive
  • Pahle, Andreas; Sørli, Daniel; Kristiansen, Ivar Sønbø; Deraas, Trygve Sigvart & Halvorsen, Peder Andreas (2017). Practice variation in surgical procedures and IUD-insertions among general practitioners in Norway – a longitudinal study. BMC Family Practice. ISSN 1471-2296. 18:7. doi: 10.1186/s12875-017-0581-9. Full text in Research Archive
  • Pedersen, Kine; Sørbye, Sveinung Wergeland; Kristiansen, Ivar Sønbø & Burger, Emily (2017). Using novel biomarkers to triage young adult women with minor cervical lesions: a cost-effectiveness analysis. BJOG: An International Journal of Obstetrics and Gynaecology. ISSN 1470-0328. 124(3), p. 474–484. doi: 10.1111/1471-0528.14135.
  • Pedersen, Kine; Burger, Emily; Sy, Stephen; Kristiansen, Ivar Sønbø & Kim, Jane J. (2016). Cost-effective management of women with minor cervical lesions: Revisiting the application of HPV DNA testing. Gynecologic Oncology. ISSN 0090-8258. 143(2), p. 326–333. doi: 10.1016/j.ygyno.2016.08.231. Full text in Research Archive
  • Lousdal, Mette L; Kristiansen, Ivar Sønbø; Møller, Bjørn & Støvring, Henrik (2016). Effect of organised mammography screening on stage-specific incidence in Norway: Population study. British Journal of Cancer. ISSN 0007-0920. 114(5), p. 590–596. doi: 10.1038/bjc.2016.8.
  • Augestad, Liv Ariane; Stavem, Knut; Kristiansen, Ivar Sønbø; Samuelsen, Carl Haakon & Rand-Hendriksen, Kim (2016). Influenced from the start: anchoring bias in time trade-off valuations. Quality of Life Research. ISSN 0962-9343. 25(9), p. 1–13. doi: 10.1007/s11136-016-1266-x.
  • Hagen, Gunhild; Wisløff, Torbjørn & Kristiansen, Ivar Sønbø (2016). The predicted lifetime costs and health consequences of calcium and vitamin D supplementation for fracture prevention—the impact of cardiovascular effects. Osteoporosis International. ISSN 0937-941X. 27(6), p. 2089–2098. doi: 10.1007/s00198-016-3495-9.
  • Møller, MH; Kristiansen, Ivar Sønbø; Beisland, Christian; Rørvik, Jarle & Støvring, H (2016). Trends in stage-specific incidence of prostate cancer in Norway, 1980–2010: a population-based study. BJU International. ISSN 1464-4096. 118(4), p. 547–555. doi: 10.1111/bju.13364.
  • Shin, Minkyung; Valcarcel Salamanca, Beatriz; Kristiansen, Ivar Sønbø & Flem, Elmira (2016). Healthcare Costs of Rotavirus and Other Types of Gastroenteritis in Children in Norway. The Pediatric Infectious Disease Journal. ISSN 0891-3668. 35(4), p. e97–e101. doi: 10.1097/INF.0000000000001026.
  • Pedersen, Kine; Sørbye, Sveinung Wergeland; Burger, Emily; Lönnberg, Stefan & Kristiansen, Ivar Sønbø (2015). Using decision-analytic modeling to isolate interventions that are feasible, efficient and optimal: an application from the Norwegian Cervical Cancer Screening Program. Value in Health. ISSN 1098-3015. 18(8), p. 1088–1097. doi: 10.1016/j.jval.2015.08.003. Full text in Research Archive
  • Kvamme, Maria Knoph; Lie, Elisabeth; Uhlig, Till; Moger, Tron Anders; Kvien, Tore Kristian & Kristiansen, Ivar Sønbø (2015). Cost-effectiveness of TNF inhibitors vs synthetic disease-modifying antirheumatic drugs in patients with rheumatoid arthritis: A Markov model study based on two longitudinal observational studies. Rheumatology. ISSN 1462-0324. 54(7), p. 1226–1235. doi: 10.1093/rheumatology/keu460.
  • Halvorsen, Peder Andreas; Aasland, Olaf Gjerløw & Kristiansen, Ivar Sønbø (2015). Decisions on statin therapy by patients’ opinions about survival gains: cross sectional survey of general practitioners. BMC Family Practice. ISSN 1471-2296. 16. doi: 10.1186/s12875-015-0288-8. Full text in Research Archive
  • Pedersen, Kine; Lönnberg, Stefan; Skare, Gry Baadstrand; Sørbye, Sveinung Wergeland; Burger, Emily & Kristiansen, Ivar Sønbø (2015). Kostnader ved Masseundersøkelsen mot livmorhalskreft. Sykepleien Forskning. ISSN 1890-2936. p. 62–71. doi: 10.4220/Sykepleienf.2015.53414. Full text in Research Archive
  • Burger, Emily; Sy, Stephen; Nygård, Mari; Kristiansen, Ivar Sønbø & Kim, Jane J (2015). Too late to vaccinate? The incremental benefits and cost-effectiveness of a delayed catch-up program using the 4-valent human papillomavirus vaccine in Norway. Journal of Infectious Diseases. ISSN 0022-1899. 211(2), p. 206–215. doi: 10.1093/infdis/jiu413.
  • Lousdal, Mette L; Kristiansen, Ivar Sønbø; Møller, Bjørn & Støvring, Henrik (2014). Trends in breast cancer stage distribution before, during and after introduction of a screening programme in Norway. European Journal of Public Health. ISSN 1101-1262. 24(6), p. 1017–1022. doi: 10.1093/eurpub/cku015.
  • LUNDQVIST, CHRISTOFER; Beiske, Antonie Giæver; Reiertsen, Ola & Kristiansen, Ivar Sønbø (2014). Real life cost and quality of life associated with continuous intraduodenal levodopa infusion compared with oral treatment in Parkinson patients. Journal of Neurology. ISSN 0340-5354. 261(12), p. 2438–2445. doi: 10.1007/s00415-014-7515-4.
  • Bøhmer, Ellen; Kristiansen, Ivar Sønbø; Arnesen, Harald & Halvorsen, Sigrun (2014). Health-related quality of life after myocardial infarction, does choice of method make a difference? Scandinavian Cardiovascular Journal. ISSN 1401-7431. 48(4), p. 216–222. doi: 10.3109/14017431.2014.923581.
  • Harmsen, Charlotte G; Kristiansen, Ivar Sønbø; Larsen, Pia Veldt; Nexøe, Jørgen; Støvring, Henrik & Gyrd-Hansen, Dorte [Show all 9 contributors for this article] (2014). Communicating risk using absolute risk reduction or prolongation of life formats: Cluster-randomisedtrial in general practice. British Journal of General Practice. ISSN 0960-1643. 64(621), p. e199–e207. doi: 10.3399/bjgp14X677824.
  • Burger, Emily; Nygård, Mari; Gyrd-Hansen, Dorte; Moger, Tron Anders & Kristiansen, Ivar Sønbø (2014). Does the primary screening test influence women's anxiety and intention to screen for cervical cancer? A randomized survey of Norwegian women. BMC Public Health. ISSN 1471-2458. 14:360. doi: 10.1186/1471-2458-14-360. Full text in Research Archive
  • Burger, Emily; Sy, Stephen; Nygård, Mari; Kristiansen, Ivar Sønbø & Kim, Jane J (2014). Prevention of HPV-Related Cancers in Norway: Cost-Effectiveness of Expanding the HPV Vaccination Program to Include Pre-Adolescent Boys. PLOS ONE. ISSN 1932-6203. 9(3). doi: 10.1371/journal.pone.0089974. Full text in Research Archive
  • De Blasio, Birgitte Freiesleben; Flem, Elmira; Latipov, Renat; Kuatbaeva, Ajnagul & Kristiansen, Ivar Sønbø (2014). Dynamic Modeling of Cost-effectiveness of Rotavirus Vaccination, Kazakhstan. Emerging Infectious Diseases. ISSN 1080-6040. 20(1), p. 29–37. doi: 10.3201/eid2001.130019. Full text in Research Archive
  • Støvring, Henrik; Harmsen, CG; Wisløff, Torbjørn; Jarbøl, DE; Nexøe, Jørgen & Nielsen, Jesper Bo [Show all 7 contributors for this article] (2013). A competing risk approach for the European Heart SCORE model based on cause-specific and all-cause mortality. European Journal of Preventive Cardiology (EJPC). ISSN 2047-4873. 20(5), p. 827–836. doi: 10.1177/2047487312445425.
  • Augestad, Liv Ariane; Rand-Hendriksen, Kim; Stavem, Knut & Kristiansen, Ivar Sønbø (2013). Time trade-off and attitudes toward euthanasia: implications of using 'death' as an anchor in health state valuation. Quality of Life Research. ISSN 0962-9343. 22(4), p. 705–714. doi: 10.1007/s11136-012-0192-9.
  • Wisløff, Torbjørn; Atar, Dan & Kristiansen, Ivar Sønbø (2013). Cost Effectiveness of Drug-Eluting Stents as Compared With Bare Metal Stents in Patients With Coronary Artery Disease. American Journal of Therapeutics. ISSN 1075-2765. 20(6), p. 596–601. doi: 10.1097/MJT.0b013e3182211a01.
  • Boberg, Kirsten Muri; Wisløff, Torbjørn; Kjøllesdal, Karl Sæbjørn; Støvring, Henrik & Kristiansen, Ivar Sønbø (2013). Cost and health consequences of treatment of primary biliary cirrhosis with ursodeoxycholic acid. Alimentary Pharmacology and Therapeutics. ISSN 0269-2813. 38(7), p. 794–803. doi: 10.1111/apt.12435.
  • Harmsen, Charlotte G; Jarbøl, Dorte E; Nexøe, Jørgen; Støvring, Henrik; Gyrd-Hansen, Dorte & Nielsen, Jesper Bo [Show all 8 contributors for this article] (2013). Impact of effectiveness information format on patient choice of therapy and satisfaction with decisions about chronic disease medication: the "Influence of intervention Methodologies on Patient Choice of Therapy (IMPACT)" cluster-randomised trial in general practice. BMC Health Services Research. ISSN 1472-6963. 13. doi: 10.1186/1472-6963-13-76.
  • Halvorsen, Peder Andreas; Edwards, A.; Aaraas, Ivar Johannes; Aasland, Olaf Gjerløw & Kristiansen, Ivar Sønbø (2013). What professional activities do general practitioners find most meaningful? Cross sectional survey of Norwegian general practitioners. BMC Family Practice. ISSN 1471-2296. 14(41). doi: 10.1186/1471-2296-14-41. Full text in Research Archive
  • Augestad, Liv Ariane; Rand-Hendriksen, Kim; Kristiansen, Ivar Sønbø & Stavem, Knut (2012). Impact of Transformation of Negative Values and Regression Models on Differences Between the UK and US EQ-5D Time Trade-Off Value Sets. PharmacoEconomics (Auckland). ISSN 1170-7690. 30(12), p. 1203–1214. doi: 10.2165/11595420-000000000-00000.
  • Li, J; Ulvin, Kim Andre; Biboh, Henrietta & Kristiansen, Ivar Sønbø (2012). Cost-effectiveness of supplementing a broth-enriched culture test with the Xpert meticillin-resistant Staphylococcus aureus (MRSA) assay for screening inpatients at high risk of MRSA. Journal of Hospital Infection. ISSN 0195-6701. 82(4), p. 227–233. doi: 10.1016/j.jhin.2012.08.009.
  • Harmsen, Charlotte G; Støvring, Henrik; Jarbøl, Dorte E; Nexøe, Jørgen; Gyrd-Hansen, Dorte & Nielsen, Jesper Bo [Show all 8 contributors for this article] (2012). Medication effectiveness may not be the major reason for accepting cardiovascular preventive medication: A population-based survey. BMC Medical Informatics and Decision Making. ISSN 1472-6947. 12. doi: 10.1186/1472-6947-12-89.
  • Kvamme, Maria Knoph; Lie, Elisabeth; Kvien, Tore Kristian & Kristiansen, Ivar Sønbø (2012). Two-year direct and indirect costs for patients with inflammatory rheumatic joint diseases: data from real-life follow-up of patients in the NOR-DMARD registry. Rheumatology. ISSN 1462-0324. 51(9), p. 1618–1627. doi: 10.1093/rheumatology/kes074.
  • Xue, Yiting; Kristiansen, Ivar Sønbø & De Blasio, Birgitte Freiesleben (2012). Dynamic modelling of costs and health consequences of school closure during an influenza pandemic. BMC Public Health. ISSN 1471-2458. 12. doi: 10.1186/1471-2458-12-962.
  • Fuglenes, Dorthe; Aas, Eline; Botten, Grete Synøve; Øian, Pål & Kristiansen, Ivar Sønbø (2012). Maternal Preference for Cesarean Delivery Do Women Get What They Want? Obstetrics and Gynecology. ISSN 0029-7844. 120(2), p. 252–260. doi: 10.1097/AOG.0b013e3182605b1a.
  • Burger, Emily; Ortendahl, J D; Sy, S; Kristiansen, Ivar Sønbø & Kim, J.J. (2012). Cost-effectiveness of cervical cancer screening with primary human papillomavirus testing in Norway. British Journal of Cancer. ISSN 0007-0920. 106(9), p. 1571–1578. doi: 10.1038/bjc.2012.94.
  • Wisløff, Torbjørn; Selmer, Randi; Halvorsen, Sigrun; Fretheim, Atle; Norheim, Ole Frithjof & Kristiansen, Ivar Sønbø (2012). Choice of generic antihypertensive drugs for the primary prevention of cardiovascular disease - A cost-effectiveness analysis. BMC Cardiovascular Disorders. ISSN 1471-2261. 12. doi: 10.1186/1471-2261-12-26.
  • Rand-Hendriksen, Kim; Augestad, Liv Ariane; Dahl, Fredrik Andreas; Kristiansen, Ivar Sønbø & Stavem, Knut (2012). A Shortcut to Mean-Based Time Tradeoff Tariffs for the EQ-5D? Medical decision making. ISSN 0272-989X. 32(4), p. 569–577. doi: 10.1177/0272989X11431607.
  • Augestad, Liv Ariane; Rand-Hendriksen, Kim; Kristiansen, Ivar Sønbø & Stavem, Knut (2012). Learning Effects in Time Trade-Off Based Valuation of EQ-5D Health States. Value in Health. ISSN 1098-3015. 15(2), p. 340–345. doi: 10.1016/j.jval.2011.10.010.
  • Fretheim, Atle; Odgaard-Jensen, Jan; Brørs, Odd; Madsen, Steinar; Njølstad, Inger & Norheim, Ole Frithjof [Show all 10 contributors for this article] (2012). Comparative effectiveness of antihypertensive medication of primary prevention of cardiovascular disease: Systematic review and multiple treatments meta-analysis. BMC Medicine. ISSN 1741-7015. 10. doi: 10.1186/1741-7015-10-33. Full text in Research Archive
  • Spronk, Sandra; van Kempen, Bob JH; Boll, Albertus PM; Jørgensen, Jørgen J.; Hunink, MG Myriam & Kristiansen, Ivar Sønbø (2011). Cost-effectiveness of screening for abdominal aortic aneurysm in the Netherlands and Norway. British Journal of Surgery. ISSN 0007-1323. 98(11), p. 1546–1555. doi: 10.1002/bjs.7620.
  • Bøhmer, Ellen; Kristiansen, Ivar Sønbø; Arnesen, Harald & Halvorsen, Sigrun (2011). Health and cost consequences of early versus late invasive strategy after thrombolysis for acute myocardial infarction. European Journal of Cardiovascular Prevention & Rehabilitation. ISSN 1741-8267. 18(5), p. 717–723. doi: 10.1177/1741826711398425.
  • Halvorsen, Peder Andreas; Wisløff, Torbjørn; Støvring, Henrik; Aasland, Olaf Gjerløw & Kristiansen, Ivar Sønbø (2011). Therapeutic decisions by number needed to treat and survival gains: a cross-sectional survey of lipid-lowering drug recommendations. British Journal of General Practice. ISSN 0960-1643. 61(589), p. e477–e483. doi: 10.3399/bjgp11x588448.
  • Rand-Hendriksen, Kim; Augestad, Liv Ariane; Kristiansen, Ivar Sønbø & Stavem, Knut (2011). Comparison of hypothetical and experienced EQ-5D valuations: relative weights of the five dimensions. Quality of Life Research. ISSN 0962-9343. doi: 10.1007/s11136-011-0016-3.

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  • Kvamme, Maria Knoph; Lie, Elisabeth; Uhlig, Till; Moger, Tron Anders; Kvien, Tore Kristian & Kristiansen, Ivar Sønbø (2020). Erratum: Cost-effectiveness of TNF inhibitors vs synthetic disease-modifying antirheumatic drugs in patients with rheumatoid arthritis: A Markov model study based on two longitudinal observational studies (Rheumatology (2015 54 (1226-1235) DOI: 10.1093/rheumatology/keu460). Rheumatology. ISSN 1462-0324. 59(4). doi: 10.1093/rheumatology/kez609.
  • Zahl, Per Henrik & Kristiansen, Ivar Sønbø (2020). Re: Stage-specific survival has improved for young breast cancer patients since 2000: but not equally? Breast Cancer Research and Treatment. ISSN 0167-6806. 185(2), p. 527–528. doi: 10.1007/s10549-020-05941-7.
  • Kristiansen, Ivar Sønbø; Burger, Emily & De Blasio, Birgitte Freiesleben (2020). Covid-19: Simulation models for epidemics. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 140(6). doi: 10.4045/tidsskr.20.0225.
  • Kristiansen, Ivar Sønbø; Burger, Emily & De Blasio, Birgitte Freiesleben (2020). Covid-19: Simuleringsmodeller ved epidemier. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 140(6), p. 1–6. doi: 10.4045/TIDSSKR.20.0225.
  • Kristiansen, Ivar Sønbø; Bugge, Christoffer & Førde, Olav Helge (2018). Bidrar overdiagnostikk til høye melanomtall? Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(11), p. 1007–1010. doi: 10.4045/tidsskr.17.0600.
  • Kristiansen, Ivar Sønbø & Bugge, Christoffer (2018). Prioritering i pasienters siste leveår. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(9). doi: 10.4045/tidsskr.18.0389.
  • Kristiansen, Ivar Sønbø (2017). Verdiløs helsepolitikk. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 137(16), p. 1156–1157. doi: 10.4045/tidsskr.17.0667.
  • Burger, Emily; Pedersen, Kine; Sy, Stephen; Kristiansen, Ivar Sønbø & Kim, Jane J. (2017). Primary HPV-based Cervical Cancer Screening: Balancing Health Benefits Colposcopy Referrals.
  • Hagen, Gunhild; Wisløff, Torbjørn & Kristiansen, Ivar Sønbø (2016). Bør Tine rekruttere melkedrikkere? Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116.
  • Mundal, Liv; Igland, Jannicke; Veierød, Marit Bragelien; Holven, Kirsten Bjørklund; Selmer, Randi & Wisløff, Torbjørn [Show all 8 contributors for this article] (2016). INCIDENCE OF ACUTE MYOCARDIAL INFARCTION IN PATIENTS WITH GENOTYPED FAMILIAL HYPERCHOLESTEROLEMIA IN NORWAY DURING 2001-2009. Circulation. ISSN 0009-7322. 134 (25), p. E711–E711.
  • Pedersen, Kine; Burger, Emily; Sy, Stephen; Kristiansen, Ivar Sønbø & Kim, Jane J. (2016). Cost-effective management of women with minor cervical lesions: Revisiting the application of HPV DNA testing.
  • Sørbye, Sveinung Wergeland; Kristiansen, Ivar Sønbø; Ursin, Giske; Iversen, Ole-Erik & Aarseth, Hans Petter (2016). Fortsatt strid om etikken bak HPV-prosjekt. [Internet]. Dagens Medisin.
  • Pedersen, Kine; Sørbye, Sveinung Wergeland; Kristiansen, Ivar Sønbø & Burger, Emily (2015). Novel Biomarkers to Triage Women with Minor Cervical Lesions: Quantifying the Cost-Effectiveness Tradeoffs to Ensure Feasible Implementation.
  • Pedersen, Kine; Sørbye, Sveinung Wergeland; Burger, Emily; Lönnberg, Stefan & Kristiansen, Ivar Sønbø (2015). Quantifying benefits and harms in cervical cancer screening: A decision analytic approach.
  • Kristiansen, Ivar Sønbø (2014). Re: Hvorfor blir jeg ikke sitert? Tidsskrift for Den norske legeforening. ISSN 0029-2001. 134(16). doi: 10.4045/tidsskr.14.0915.
  • Pedersen, Kine; Sørbye, Sveinung Wergeland; Lönnberg, Stefan; Burger, Emily & Kristiansen, Ivar Sønbø (2014). Trade-offs in cervial cancer screening - Balancing detected cancer precursors and resource use.
  • Sørbye, Sveinung Wergeland & Kristiansen, Ivar Sønbø (2014). - En celleprøve er ikke en perfekt test som kan garantere mot utvikling av livmorhals-kreft. Avisa Nordland. p. 3–3.
  • Sørbye, Sveinung Wergeland; Stålcrantz, Jeanette; Trovik, Jone; Nøkleby, Hanne & Kristiansen, Ivar Sønbø (2014). - Alle kvinner bør ta denne vaksinen. [Internet]. Klikk.no.
  • Tveito, Marit & Kristiansen, Ivar Sønbø (2014). Tallenes taler. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 134(3), p. 288–290. doi: 10.4045/tidsskr.13.1638.
  • Sørbye, Sveinung Wergeland & Kristiansen, Ivar Sønbø (2014). Forebygging av livmorhalskreft. Avisa Nordland. p. 3–3.
  • Kristiansen, Ivar Sønbø & Sørbye, Sveinung Wergeland (2014). HPV-testing: Usikkerhet og verdivalg. Dagens medisin. ISSN 1501-4290.
  • Hagen, Gunhild; Rand-Hendriksen, Kim; Bjørnelv, Gudrun Maria Waaler; Kvamme, Maria Knoph & Kristiansen, Ivar Sønbø (2013). Bør prioriteringer QALYfiseres? Dagens medisin. ISSN 1501-4290.
  • Olsen, Jan Abel; Kristiansen, Ivar Sønbø; Magnussen, Jon; Norheim, Ole Frithjof & Robberstad, Bjarne (2013). Fagkritikkens utfordringer. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 133(5). doi: 10.4045/tidsskr.13.0174.
  • Samuelsen, Carl Haakon; Augestad, Liv Ariane; Stavem, Knut; Kristiansen, Ivar Sønbø & Rand-Hendriksen, Kim (2013). Anchoring effects in the Lead-Time Time Trade-Off.
  • Sørbye, Sveinung Wergeland; Halvorsen, Peder Andreas & Kristiansen, Ivar Sønbø (2013). Screening for livmorhalskreft – fastlegenes viktigste screeningoppgave? Utposten. ISSN 0800-5680. 42(2), p. 34–37.
  • Wisløff, Torbjørn; Aalen, Odd O. & Kristiansen, Ivar Sønbø (2012). Regarding adequate methods for comparison of effect measures - Reply. Journal of Clinical Epidemiology. ISSN 0895-4356. 65(4), p. 462–463. doi: 10.1016/j.jclinepi.2011.10.005.
  • Augestad, Liv Ariane; Rand-Hendriksen, Kim; Kristiansen, Ivar Sønbø & Stavem, Knut (2012). Time trade-off and attitudes toward euthanasia: implications using ‘death’ as an anchor in health state valuation.
  • Rand-Hendriksen, Kim; Augestad, Liv Ariane; Kristiansen, Ivar Sønbø & Stavem, Knut (2012). Time trade-off and ranking exercises are sensitive to different dimensions of EQ-5D health states.
  • Rand-Hendriksen, Kim; Augestad, Liv Ariane; Kristiansen, Ivar Sønbø & Stavem, Knut (2012). Postal or web-based? Population representativeness in health survey settings.
  • Augestad, Liv Ariane; Rand-Hendriksen, Kim; Stavem, Knut & Kristiansen, Ivar Sønbø (2012). What factors explain willingness to trade in the time trade-off exercises, and what factors are important?
  • Kristiansen, Ivar Sønbø (2012). SURVIVAL CURVE CONVERGENCES AND CROSSING: A THREAT TO VALIDITY OF META-ANALYSIS? Value in Health. ISSN 1098-3015. 15(7), p. A652–A652.

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Published Apr. 13, 2011 2:45 PM - Last modified Nov. 3, 2016 1:47 PM