Kjetså, Ingrid; Halvorsen, Peder Andreas; Kokkvoll, Ane Sofie. Age, income and sleep duration were associated with outcomes in children participating in weight management. (fulltekst) Acta Paediatrica 2022. ISSN 0803-5253.s 1 - 8.s doi: 10.1111/apa.16339.
Al-Azzawi, Resha; Halvorsen, Peder Andreas; Risør, Torsten. Context and general practitioner decision-making - a scoping review of contextual influence on antibiotic prescribing. BMC Family Practice 2021; Volum 22 (1). ISSN 1471-2296.s doi: 10.1186/s12875-021-01574-x.
Hjortdahl, Magnus; Gyrd-Hansen, Dorte; Halvorsen, Peder Andreas. GP decisions to participate in emergencies: a randomised vignette study. British Journal of General Practice Open 2021. ISSN 2398-3795.s doi: 10.3399/bjgpopen20X101153.
Beldo, Sigurd; Morseth, Bente; Christoffersen, Tore; Halvorsen, Peder Andreas; Hansen, Bjørge Hermann; Furberg, Anne-Sofie; Ekelund, Ulf; Horsch, Alexander. Prevalence of accelerometer-measured physical activity in adolescents in Fit Futures - part of the Tromsø Study. BMC Public Health 2020; Volum 20. ISSN 1471-2458.s doi: 10.1186/s12889-020-09171-w.
Yigzaw, Kassaye Yitbarek; Budrionis, Andrius; Ruiz, Luis Marco; Henriksen, Torje Dahle; Halvorsen, Peder Andreas; Bellika, Johan Gustav. Privacy-preserving architecture for providing feedback to clinicians on their clinical performance. BMC Medical Informatics and Decision Making 2020; Volum 20 (1). ISSN 1472-6947.s doi: 10.1186/s12911-020-01147-5.
Hjortdahl, Magnus; Zakariassen, Erik; Halvorsen, Peder Andreas. Self reported involvement in emergency medicine among GPs in Norway. Scandinavian Journal of Primary Health Care 2018; Volum 36 (2). ISSN 0281-3432.s 161 - 169.s doi: 10.1080/02813432.2018.1459234.
Pahle, Andreas; Sørli, Daniel; Kristiansen, Ivar Sønbø; Deraas, Trygve Sigvart; Halvorsen, Peder Andreas. Practice variation in surgical procedures and IUD-insertions among general practitioners in Norway – a longitudinal study. (fulltekst) BMC Family Practice 2017; Volum 18:7. ISSN 1471-2296.s doi: 10.1186/s12875-017-0581-9.
Aviles Solis, Juan Carlos; Vanbelle, Sophie; Halvorsen, Peder Andreas; Francis, Nick; Cals, Jochem W L; Andreeva, Elena A; Marques, Alda; Piirila, Paivi; Pasterkamp, Hans; Melbye, Hasse. International perception of lung sounds: a comparison of classification across some European borders. BMJ Open Respiratory Research 2017; Volum 4 (1). ISSN 2052-4439.s doi: 10.1136/bmjresp-2017-000250.
Gaski, Margrete; Halvorsen, Peder Andreas; Aaraas, Ivar Johannes; Aasland, Olaf Gjerløw. Utdanner Universitetet i Tromsø - Norges arktiske universitet leger til å arbeide i distrikter?. Tidsskrift for Den norske legeforening 2017; Volum 137 (14-15). ISSN 0029-2001.s doi: 10.4045/tidsskr.16.1024.
Laue, Johanna; Melbye, Hasse; Halvorsen, Peder Andreas; Andreeva, Elena; Godycki-Cwirko, Maciek; Wollny, Anja; Francis, Nick; Spigt, Mark; Kung, Kenny; Risør, Mette Bech. How do general practitioners implement decision-making regarding COPD patients with exacerbations? An international focus group study. The International Journal of Chronic Obstructive Pulmonary Disease 2016; Volum 11 (1). ISSN 1176-9106.s 3109 - 3119.s doi: 10.2147/COPD.S118856.
Hjortdahl, Magnus; Halvorsen, Peder Andreas; Risør, Mette Bech. Rural GPs’ attitudes toward participating in emergency medicine: a qualitative study. Scandinavian Journal of Primary Health Care 2016; Volum 34 (4). ISSN 0281-3432.s 377 - 384.s doi: 10.1080/02813432.2016.1249047.
Brandstorp, Helen; Halvorsen, Peder Andreas; Sterud, Birgitte; Haugland, Bjørgun; Kirkengen, Anna Luise. Primary care emergency team training in situ means learning in real context. (data) Scandinavian Journal of Primary Health Care 2016; Volum 34 (3). ISSN 0281-3432.s 295 - 303.s doi: 10.1080/02813432.2016.1207150.
Barfoed, BL; Paulsen, MS; Christensen, Palle Mark; Halvorsen, Peder Andreas; Kjær, Trine; Larsen, ML; Larsen, Pia Veldt; Nielsen, Jesper Bo; Søndergaard, Jens; Jarbøl, Dorte E. Associations between patients’ risk attitude and their adherence to statin treatment – a population based questionnaire and register study. BMC Family Practice 2016; Volum 17 (1). ISSN 1471-2296.s doi: 10.1186/s12875-016-0423-1.
Barfoed, BL; Paulsen, MS; Christensen, Palle Mark; Halvorsen, Peder Andreas; Jarbøl, Dorte E; Larsen, ML; Munch, Maria R; Søndergaard, Jens; Nielsen, Jesper Bo. Associations between patients’ adherence and GPs’ attitudes towards risk, statin therapy and management of non-adherence — a survey and register-based study. Family Practice 2016; Volum 33 (2). ISSN 0263-2136.s 140 - 147.s doi: 10.1093/fampra/cmw005.
Barfoed, BL; Jarbøl, DE; Paulsen, MS; Christensen, Palle Mark; Halvorsen, Peder Andreas; Nielsen, JB; Søndergaard, Jens. GPs' Perceptions of Cardiovascular Risk and Views on Patient Compliance: A Qualitative Interview Study.. International Journal of Family Medicine 2015; Volum 2015. ISSN 2090-2042.s doi: 10.1155/2015/214146.
Brandstorp, Helen; Kirkengen, Anna Luise; Sterud, Birgitte; Haugland, Bjørgun; Halvorsen, Peder Andreas. Leadership practice as interaction in primary care emergency team training. (data) Action research 2015; Volum 13 (1). ISSN 1476-7503.s 84 - 101.s doi: 10.1177/1476750314566660.
Holte, Jon Helgheim; Abelsen, Birgit; Halvorsen, Peder Andreas; Olsen, Jan Abel. General practitioners’ altered preferences for private practice vs. salaried positions: a consequence of proposed policy regulations?. BMC Health Services Research 2015; Volum 15 (119). ISSN 1472-6963.s doi: 10.1186/s12913-015-0777-4.
Aaraas, Ivar Johannes; Halvorsen, Peder Andreas; Aasland, Olaf Gjerløw. Supply of doctors to a rural region: Occupations of Tromsø medical graduates 1979–2012. Medical Teacher 2015; Volum 37 (12). ISSN 0142-159X.s 1078 - 1082.s doi: 10.3109/0142159X.2015.1009427.
Halvorsen, Peder Andreas; Aasland, Olaf Gjerløw; Kristiansen, Ivar Sønbø. Decisions on statin therapy by patients’ opinions about survival gains: cross sectional survey of general practitioners. BMC Family Practice 2015; Volum 16. ISSN 1471-2296.s doi: 10.1186/s12875-015-0288-8.
Halvorsen, Peder Andreas; Godycki-Cwirko, Maciek; Wennevold, Katrine; Melbye, Hasse. Would GPs advise patients with respiratory tract infections to refrain from exercise, stay indoors or stay in bed? Survey of GPs in Poland and Norway∗. European Journal of General Practice 2014; Volum 20 (3). ISSN 1381-4788.s 209 - 213.s doi: 10.3109/13814788.2013.848339.
Hansen, Anne Helen; Kristoffersen, Agnete Egilsdatter; Lian, Olaug S; Halvorsen, Peder Andreas. Continuity of GP care is associated with lower use of complementary and alternative medical providers: a population-based cross-sectional survey. BMC Health Services Research 2014; Volum 14 (629). ISSN 1472-6963.s doi: 10.1186/s12913-014-0629-7.
Halvorsen, Peder Andreas; Edwards, A.; Aaraas, Ivar Johannes; Aasland, Olaf Gjerløw; Kristiansen, Ivar Sønbø. What professional activities do general practitioners find most meaningful? Cross sectional survey of Norwegian general practitioners. BMC Family Practice 2013; Volum 14 (41). ISSN 1471-2296.s doi: 10.1186/1471-2296-14-41.
Oshaug, Katja; Halvorsen, Peder Andreas; Melbye, Hasse. Should chest examination be reinstated in the early diagnosis of chronic obstructive pulmonary disease?. The International Journal of Chronic Obstructive Pulmonary Disease 2013; Volum 8. ISSN 1176-9106.s 369 - 377.s doi: 10.2147/COPD.S47992.
Hansen, Anne Helen; Halvorsen, Peder Andreas; Aaraas, Ivar Johannes; Førde, Olav Helge. Continuity of GP care is related to reduced specialist healthcare use: a cross-sectional survey. (sammendrag) British Journal of General Practice 2013; Volum 63 (612). ISSN 0960-1643.s e482 - e489.s doi: 10.3399/bjgp13X669202.
Halvorsen, Peder Andreas; Steinert, Svein; Aaraas, Ivar Johannes. Remuneration and organization in general practice: Do GPs prefer private practice or salaried positions?. Scandinavian Journal of Primary Health Care 2012; Volum 30 (4). ISSN 0281-3432.s 229 - 233.s doi: 10.3109/02813432.2012.711191.
Melbye, Hasse; Joensen, Lisa; Risør, Mette Bech; Halvorsen, Peder Andreas. Symptoms of respiratory tract infection and associated care-seeking in subjects with and without obstructive lung disease; The Tromso Study: Tromso 6. BMC Pulmonary Medicine 2012; Volum 12 (1). ISSN 1471-2466.s 51 - .s doi: 10.1186/1471-2466-12-51.
Hansen, Anne Helen; Halvorsen, Peder Andreas; Ringberg, Unni; Førde, Olav Helge. Socio-economic inequalities in health care utilisation in Norway: a population based cross-sectional survey. BMC Health Services Research 2012; Volum 12 (336). ISSN 1472-6963.s doi: 10.1186/1472-6963-12-336.
Hansen, Anne Helen; Halvorsen, Peder Andreas; Førde, Olav Helge. The ecology of medical care in Norway: wide use of general practitioners may not necessarily keep patients out of hospitals. (fulltekst) Journal of Public Health Research 2012; Volum 1 (2). ISSN 2279-9028.s e28 - .s doi: 10.4081/jphr.2012.e28.
Brandstorp, Helen; Kirkengen, Anna Luise; Halvorsen, Peder Andreas; Sterud, Birgitte; Haugland, Bjørgun. Training interaction in primary care emergency teams: the role of the patient. (sammendrag) The International Journal of Person Centered Medicine 2012; Volum 2 (4). ISSN 2043-7730.s 656 - 663.
Halvorsen, Peder Andreas; Wisløff, Torbjørn; Støvring, Henrik; Aasland, Olaf Gjerløw; Kristiansen, Ivar Sønbø. Therapeutic decisions by number needed to treat and survival gains: a cross-sectional survey of lipid-lowering drug recommendations. (data) British Journal of General Practice 2011; Volum 61 (589). ISSN 0960-1643.s e477 - e483.s doi: 10.3399/bjgp11x588448.
Gyrd-Hansen, Dorte; Halvorsen, Peder Andreas; Nexoe, J; Nielsen, Jesper Bo; Stovring, H; Kristiansen, Ivar Sønbø. Joint and Separate Evaluation of Risk Reduction: Impact on Sensitivity to Risk Reduction Magnitude in the Context of 4 Different Risk Information Formats. Medical decision making 2011; Volum 31 (1). ISSN 0272-989X.s E1 - E10.s doi: 10.1177/0272989X10391268.
Halvorsen, Peder Andreas; Wennevold, Katrine; Fleten, Nils; Muras, Magdalena; Kowalczyk, Anna; Godycki-Cwirko, Maciek; Melbye, Hasse. Decisions on sick leave certifications for acute airways infections based on vignettes: A cross-sectional survey of GPs in Norway and Poland. Scandinavian Journal of Primary Health Care 2011; Volum 29 (2). ISSN 0281-3432.s 110 - 116.s doi: 10.3109/02813432.2011.555382.
Halvorsen, Peder A; Selmer, Randi Marie; Kristiansen, Ivar S. Anticipated longevity among lay people screened for cardiovascular risk factors: A cross-sectional questionnaire study. Scandinavian Journal of Public Health 2010; Volum 38 (5). ISSN 1403-4948.s 481 - 488.s doi: 10.1177/1403494810370235.
Halvorsen, Peder Andreas. Kan risk förklaras med hjälp av siffror?. Studentlitteratur AB 2009 ISBN 978-91-44-05255-7.s 329 - 339.
Halvorsen, Peder Andreas; Hetlevik, Irene. Signe Skred: Vad kan hon vinna med förebyggande statinbehandling?. Studentlitteratur AB 2009 ISBN 978-91-44-05255-7.s 117 - 129.
Gyrd-Hansen, D; Halvorsen, Peder Andreas; Kristiansen, ivar sØnbØ. Willingness-to-pay for a statistical life in the times of a pandemic. Health Economics 2008; Volum 17 (1). ISSN 1057-9230.s 55 - 66.s doi: 10.1002/hec.1236.
Nexoe, J; Halvorsen, Peder Andreas; Kristiansen, ivar sØnbØ. Critiques of the risk concept - valid or not?. Scandinavian Journal of Public Health 2007; Volum 35. ISSN 1403-4948.s 648 - 654.s doi: 10.1080/14034940701418897.
Kristiansen, Ivar Sønbø; Halvorsen, Peder Andreas; Gyrd-Hansen, D. Influenza pandemic: perception of risk and individual precautions in a general population. Cross sectional study. BMC Public Health 2007; Volum 7. ISSN 1471-2458.s doi: 10.1186/1471-2458-7-48.
Halvorsen, Peder Andreas; Selmer, R; Kristiansen, ivar sØnbØ. Different ways to describe the benefits of risk-reducing treatments - A randomized trial. Annals of Internal Medicine 2007; Volum 146. ISSN 0003-4819.
Halvorsen, PA; Kristiansen, Ivar Sønbø. Decisions on drug therapies by numbers needed to treat - A randomized trial. Archives of Internal Medicine 2005; Volum 165. ISSN 0003-9926.
Wisløff, Torbjørn; Halvorsen, Peder Andreas; Kristiansen, Ivar Sønbø. Antall som må behandles (NNT) - misvisende, misforstått, misbrukt?. Tidsskrift for Den norske legeforening 2004; Volum 124 (15). ISSN 0029-2001.s 1926 - 1929.
Halvorsen, Peder Andreas; Kristiansen, IS. Er teleradiologi i primærhelsetjenesten kostnadsbesparende?. Tidsskrift for Den norske legeforening 1997; Volum 117 (11). ISSN 0029-2001.s 1611 - 1615.
Halvorsen, Peder Andreas; Kristiansen, IS. Radiology services for remote communities: cost minimisation study of telemedicine. BMJ (Clinical Research Edition) 1996; Volum 312 (7042). ISSN 0959-8138.s 1333 - 1336.
Bellika, Johan Gustav; Halvorsen, Peder Andreas; Nilsen, Lisbeth. Slik kan du sammenligne praksisen din med fastlegekolleger – uten å bli identifisert. 2021.
Bellika, Johan Gustav; Yigzaw, Kassaye Yitbarek; Halvorsen, Peder Andreas; Johnsen, Oddny. New tool makes it possible to do research on patient records without seeing sensitive information. (fulltekst) 2021.
Bellika, Johan Gustav; Yigzaw, Kassaye Yitbarek; Halvorsen, Peder Andreas; Johnsen, Oddny. Nå kan forskere analysere pasientjournaler uten å se sensitiv informasjon. (fulltekst) 2020.
Halvorsen, Peder Andreas; Risør, Mette Bech; Melbye, Hasse. The Stethoscope 2030: Towards Personalized Diagnostics With Digital Auscultation. Using Practice Based Research Networks for Clinical Research 2019-09-04 - 2019-09-04 2019.
Halvorsen, Peder Andreas; Rørtveit, Guri; Sullivan, Frank; Koskela, Tuomas H.; Bellika, Johan Gustav; Nilsen, Stein. Practice based Research Networks: A giant leap for primary care Research (workshop). 21st Nordic Conress of General Practice 2019 2019-06-17 - 2019-06-20 2019.
Bjorvatn, Bjørn; Kristoffersen, Espen Saxhaug; Halvorsen, Peder Andreas; Fors, Egil Andreas; Nilsen, Stein; Rørtveit, Guri. Ny infrastruktur for allmennmedisinsk forskning. Tidsskrift for Den norske legeforening 2019; Volum 139 (1). ISSN 0029-2001.s 24 - 26.s doi: 10.4045/tidsskr.18.0689.
Bjorvatn, Bjørn; Straand, Jørund; Halvorsen, Peder Andreas; Wensaas, Knut-Arne; Bellika, Johan Gustav; Fors, Egil Andreas; Gjelstad, Svein; Kristoffersen, Espen Saxhaug; Øxnevad-Gundersen, Berit; Rørtveit, Guri. PraksisNett - et nettverk av fastlegepraksiser. En storsatsing på forskning i allmennpraksis.. (fulltekst) Utposten 2018 (4). ISSN 0800-5680.s 40 - 43.
Hjortdahl, Magnus; Halvorsen, Peder Andreas; Brandstorp, Helen. Kneler fastlegeordningen vil blålysmedisinen lammes. VG : Verdens gang 2018. ISSN 0805-5203.
Hjortdahl, Magnus; Halvorsen, Peder Andreas; Wisborg, Torben; Brandstorp, Helen. Tverrfaglig simuleringstrening: Ingen skal jobbe alene på legevakt. Dagens medisin 2018. ISSN 1501-4290.
Hjortdahl, Magnus; Halvorsen, Peder Andreas. Decision making in primary care emergencies: When would general practitioners attendto call outs?. 23rd WONCA Europe Conference 2018-05-24 - 2018-05-27 2018.
Hjortdahl, Magnus; Halvorsen, Peder Andreas. Decision Making in Primary Care Emergencies: When Would General Practitioners Attend to Call Outs?. SMDM 17th Biennial European Conference 2018-06-10 - 2018-06-12 2018.
Halvorsen, Peder Andreas; Brandstorp, Helen; Hjortdahl, M; Hogg, D; Holte-Ambjørnsen, Ø; Rørtveit, S. When should GPs participate in emergencyteams, and what is their contribution?. Nordic Congress for General Practice 2017 2017-06-14 - 2017-06-16 2017.
Halvorsen, Peder Andreas; Deraas, Trygve Sigvart; Kristiansen, IS; Pahle, AS; Ringberg, Unni; Schwartz, A. How should we approach practice variation? Standardization versus contextualization. Nordic Congress for General Practice 2017 2017-06-14 - 2017-06-16 2017.
Hotvedt, Martin; Halvorsen, Peder Andreas. Kontrollert risikotaker. Tidsskrift for Den norske legeforening 2016; Volum 136 (2). ISSN 0029-2001.s 118 - 120.s doi: 10.4045/tidsskr.15.1258.
Hansen, Anne Helen; Kristoffersen, Agnete Egilsdatter; Lian, Olaug S; Halvorsen, Peder Andreas. Continuity of the doctor-patient relationship may influence decisions to see a complementary and alternative medical care provider. The 36th Annual Meeting of the Society for Medical Decision Making October 18 - 22, 2014 2014-10-18 - 2014-10-22 2014.
Oshaug, Katja; Halvorsen, Peder Andreas; Melbye, Hasse. Should chest examination be reinstated in the early diagnosis of COPD?. Nordisk kongress i allmenmedisin 2013-08-21 - 2013-08-23 2013.
Sørbye, Sveinung Wergeland; Halvorsen, Peder Andreas; Kristiansen, Ivar Sønbø. Screening for livmorhalskreft – fastlegenes viktigste screeningoppgave?. (fulltekst) Utposten 2013; Volum 42 (2). ISSN 0800-5680.s 34 - 37.
Johansen, May-Lill; Steinert, Svein; Halvorsen, Peder Andreas; Aaraas, Ivar Johannes. The cheerful buzzing of Nordic voices. Scandinavian Journal of Primary Health Care 2011; Volum 29 (3). ISSN 0281-3432.s 131 - 131.s doi: 10.3109/02813432.2011.617659.
Fleten, Nils; Wennevold, Katrine; Godycki-Cwirko, M.; Melbye, Hasse; Halvorsen, Peder Andreas. Sickness certification norms in Norway and Poland, a comparative study on GPs recommendation of sick leave in respiratory tract infections. European Journal of Public Health 2010; Volum 20. ISSN 1101-1262.s 229 - 229.
Halvorsen, Peder Andreas. What Information Do Patients Need to Make a Medical Decision?. Medical decision making 2010; Volum 30 (5). ISSN 0272-989X.s 11S - 13S.s doi: 10.1177/0272989X10381090.
Halvorsen, Peder Andreas. Bør risikoreduksjoner forklares ved hjelp av tall?. Utposten 2009 (8). ISSN 0800-5680.s 29 - 33.
