Vidar Hjellvik
Senior researcher
Contact
Send email {model.translations.sendEmailTo} Vidar.Hjellvik@fhi.no
Department
Responsibilities
Epidemiology, pharmacoepidemiology, statistics, data-prosessing
Projects and publications
- Per-Jostein Samuelsen, Vidar Hjellvik, Ingvild Odsbu, Audun Stubhaug, Svetlana Ondrasova Skurtveit, Sara Magelssen Vambheim, (2025). Trends in Postoperative Opioid Use in Norway 2011-2018: A Nationwide Registry-Based Study. Basic & Clinical Pharmacology & Toxicology doi: 10.1111/bcpt.70040
- Ingvild Odsbu, Aleksi Hamina, Vidar Hjellvik, Marte Handal, Marit Haram, Martin Steen Tesli, A. Tanskanen, H. Taipale, (2024). Initiation of Antipsychotics During the First Year After First-Episode Psychosis: A Population-Based Study. Acta Psychiatrica Scandinavica doi: 10.1111/acps.13776
- Sara Magelssen Vambheim, Vidar Hjellvik, Ingvild Odsbu, Svetlana Ondrasova Skurtveit, Christopher Ekholdt, Lars-Petter Ness Granan, Audun Stubhaug, Per-Jostein Samuelsen, (2024). Postoperative opioid use in Norway-a population-based observational study on patterns of long-term use. BMC Pharmacology and Toxicology s. 1-9. doi: 10.1186/s40360-024-00805-y
- Håkon Høydal Nestvold, Svetlana Ondrasova Skurtveit, Aleksi Hamina, Vidar Hjellvik, Ingvild Odsbu, (2024). The risk of long-term opioid use among immigrants: a national registry-linkage study. Scandinavian Journal of Public Health doi: 10.1177/14034948241266744
- Tor-Arne Hegvik, Yanyan Zhou, Katrin Brauckhoff, Kari Furu, Vidar Hjellvik, Tone Bjørge, Anders Engeland, (2024). Prevalence of drugs used for chronic conditions after diagnosis of thyroid cancer: a register-based cohort study. European Journal of Endocrinology (EJE) s. 166-174. doi: 10.1093/ejendo/lvae092
- Jørgen Gustav Bramness, Vidar Hjellvik, Anne Høye, Martin Steen Tesli, Marit Haram, Wenche Nystad, Steinar Krokstad, (2024). The epidemiology of major depression among adults in Norway: an observational study on the concurrence between population surveys and registry data – a NCDNOR project. BMC Public Health doi: 10.1186/s12889-024-18754-w
- Emil Kostovski, Aleksi Hamina, Vidar Hjellvik, Thomas Clausen, Svetlana Ondrasova Skurtveit, (2024). Increased cancer incidence and mortality among people with opioid use-related disorders: A nation-wide cohort study. Addiction s. 1575-1584. doi: 10.1111/add.16524
- Claudia Bruno, Carolyn E. Cesta, Vidar Hjellvik, Sinna Pilgaard Ulrichsen, Marte-Helene Bjørk, Buket Öztürk Esen, Malcolm B. Gillies, Mika Gissler, Alys Havard, Øystein Karlstad, Maarit Leinonen, Mette Nørgaard, Sallie-Anne Pearson, Johan Reutfors, Kari Furu, Jacqueline Mallory Cohen, Helga Zoega, (2024). Antipsychotic use during pregnancy and risk of specific neurodevelopmental disorders and learning difficulties in children: a multinational cohort study. EClinicalMedicine doi: 10.1016/j.eclinm.2024.102531
- Mohammad Nouri Sharikabad, Svetlana Ondrasova Skurtveit, Hilchen Thode Sommerschild, Kristine Olsen, Ingeborg Hartz, Rikke Wesselhoeft, Vidar Hjellvik, Lars Johan Hauge, Marte Handal, (2024). Morbidity among Adolescent Hypnotic Drug Users in Norway: An Observational Population-Based Study. Journal of Clinical Medicine doi: 10.3390/jcm13041075
- Siri Marie Solbakken, Haakon Eduard Meyer, Cecilie Dahl, Trine Elisabeth Finnes, Vidar Hjellvik, Christopher Sivert Nielsen, Tone Kristin Omsland, Hein Stigum, Kristin Holvik, (2024). The medication-based Rx-Risk Comorbidity Index and risk of hip fracture - a nationwide NOREPOS cohort study. BMC Medicine doi: 10.1186/s12916-024-03335-w
- Ingvild Odsbu, Vidar Hjellvik, Marte Handal, Aleksi Hamina, Thomas Clausen, Torgeir Gilje Lid, Petter C. Borchgrevink, Svetlana Skurtveit, (2024). Psykiske lidelser og plager ved vedvarende opioidbruk for langvarige ikke-kreftrelaterte smerter – en registerstudie. Tidsskrift for Den norske legeforening (Tidsskriftet) s. 1-15. doi: 10.4045/tidsskr.23.0414
- Mariam Anjum, Inger Ariansen, Vidar Hjellvik, Randi Marie Selmer, Lars Jøran Kjerpeseth, Eva Skovlund, Marius Myrstad, Hanne Ellekjær, Ingrid E. Christophersen, Arnljot Tveit, Trygve Berge, (2023). Stroke and bleeding risk in atrial fibrillation with CHA2DS2-VASC risk score of one: the Norwegian AFNOR study. European Heart Journal s. 57-66. doi: 10.1093/eurheartj/ehad659
- Wenche Nystad, Vidar Hjellvik, Inger Kristin Larsen, Trude Eid Robsahm, Erik Reidar Sund, Steinar Krokstad, Laila Arnesdatter Hopstock, Anne Sameline Grimsgaard, Arnulf Langhammer, Jørgen Gustav Bramness, Torbjørn Wisløff, Simon Lergenmuller, Knut Eirik Dalene, Haakon Eduard Meyer, Kristin Holvik, Jon Helgeland, Øystein Karlstad, Inger Ariansen, (2023). National health registries – a ‘goldmine’ for studying non-communicable disease occurrence in Norway – the NCDNOR project. Scandinavian Journal of Public Health doi: 10.1177/14034948231214580
- Lars Jøran Kjerpeseth, Vidar Hjellvik, Hanne Løvdal Gulseth, Øystein Karlstad, Paz Lopez-Doriga Ruiz, Knut-Arne Wensaas, Kari Furu, (2023). Prevalence and treatment of gestational diabetes in Norway 2010–2020. Diabetes Research and Clinical Practice s. 1-8. doi: 10.1016/j.diabres.2023.111025
- Aleksi Hamina, Ingvild Odsbu, Vidar Hjellvik, Torgeir Gilje Lid, Thomas Clausen, Svetlana Ondrasova Skurtveit, (2023). Fatal drug overdoses in individuals treated pharmacologically for chronic pain: a nationwide register-based study. British Journal of Anaesthesia s. 86-95. doi: 10.1016/j.bja.2023.10.016
- Håkon Høydal Nestvold, Svetlana Ondrasova Skurtveit, Aleksi Hamina, Vidar Hjellvik, Ingvild Odsbu, (2023). Socioeconomic risk factors for long-term opioid use: A national registry-linkage study. European Journal of Pain s. 95-104. doi: 10.1002/ejp.2163
- Ingvild Odsbu, Marte Handal, Vidar Hjellvik, Sonia Hernandez-Diaz, Helle Kieler, Mette Nørgaard, Svetlana Ondrasova Skurtveit, Buket Öztürk Esen, Milada Mahic, (2023). Prenatal opioid exposure and risk of asthma in childhood: a population-based study from Denmark, Norway, and Sweden. Frontiers in Pharmacology s. 1-12. doi: 10.3389/fphar.2023.1056192
- Tone Bjørge, Vidar Hjellvik, Line Bjørge, Isabel dos Santos Silva, Kari Furu, Rune Kvåle, Anders Engeland, (2023). Incidence and prevalence of drugs used for chronic diseases in survivors of adult-onset gynaecological cancer - A nationwide cohort study. BJOG: An International Journal of Obstetrics and Gynaecology s. 770-778. doi: 10.1111/1471-0528.17410
- Aleksi Hamina, Ingvild Odsbu, Petter Chr. Borchgrevink, Li-Chia Chen, Thomas Clausen, Ketil Arne Espnes, Kine Gjesdal, Marte Handal, Sirpa Hartikainen, Vidar Hjellvik, Marianne Therese Smogeli Holter, Trond Høibø, Geana Paula Kurita, Harald Chr. Langaas, Torgeir Gilje Lid, Torunn Hatlen Nøst, Per Sjøgren, Svetlana Ondrasova Skurtveit, (2022). Cohort Description: Preventing an Opioid Epidemic in Norway – Focusing on Treatment of Chronic Pain (POINT) – A National Registry-Based Study. Clinical Epidemiology s. 1477-1486. doi: 10.2147/CLEP.S382136
- Rachel Bedenis Forster, Anders Engeland, Rune Kvåle, Vidar Hjellvik, Tone Bjørge, (2022). Association between medical androgen deprivation therapy and long-term cardiovascular disease and all-cause mortality in nonmetastatic prostate cancer. International Journal of Cancer s. 1109-1119. doi: 10.1002/ijc.34058
- Kristin Holvik, Vidar Hjellvik, Øystein Karlstad, Nina Gunnes, Mari Hoff, Grethe Seppola Tell, Haakon Eduard Meyer, (2022). Contribution of an extensive medication-based comorbidity index (Rx-Risk) in explaining the excess mortality after hip fracture in older Norwegians: A NOREPOS cohort study. BMJ Open s. 1-11. doi: 10.1136/bmjopen-2021-057823
- Anne Efjestad, Hege Ihle-Hansen, Vidar Hjellvik, Knut Engedal, Hege Salvesen Blix, (2022). Use of Drugs With Risk of Heart Rate-Related Problems is Common in Norwegian Dementia Patients Treated With Acetylcholinesterase Inhibitors: A Prevalence Study Based on the Norwegian Prescription Database . Frontiers in Pharmacology s. 1-12. doi: 10.3389/fphar.2021.791578
- Ingvild Odsbu, Marte Handal, Vidar Hjellvik, Petter Chr. Borchgrevink, Thomas Clausen, Ragnar Nesvåg, Svetlana Ondrasova Skurtveit, (2022). Vedvarende bruk av opioider og samtidig bruk av andre vanedannende legemidler. Tidsskrift for Den norske legeforening (Tidsskriftet) s. 1-8. doi: 10.4045/tidsskr.21.0659
- Aleksi Hamina, Vidar Hjellvik, Marte Handal, Ingvild Odsbu, Thomas Clausen, Svetlana Ondrasova Skurtveit, (2022). Describing long-term opioid use utilizing Nordic Prescription Registers - A Norwegian example. Basic & Clinical Pharmacology & Toxicology s. 481-491. doi: 10.1111/bcpt.13706
- Marit Rønning, Vidar Hjellvik, Solveig Sakshaug, Hege Salvesen Blix, Karsten Midtvedt, Anna Varberg Reisæter, Hallvard Holdaas, Anders Åsberg, (2022). Use of Statins in Kidney Transplant Recipients in Norway . International Journal of Environmental Research and Public Health (IJERPH) doi: 10.3390/ijerph19031370
- Oskar Halfdanarson, Jacqueline Mallory Cohen, Øystein Karlstad, Carolyn E. Cesta, Marte-Helene Bjørk, Siri Eldevik Håberg, Kristjana Einarsdottir, Kari Furu, Mika Gissler, Vidar Hjellvik, Helle Kieler, Maarit Leinonen, Mette Nørgaard, Buket Öztürk Essen, Sinna Pilgaard Ulrichsen, Johan Reutfors, Helga Zoega, (2021). Antipsychotic use in pregnancy and risk of attention/deficit-hyperactivity disorder and autism spectrum disorder: a Nordic cohort study. Evidence-Based Mental Health s. 54-62. doi: 10.1136/ebmental-2021-300311
- Jacqueline Mallory Cohen, Carolyn E. Cesta, Lars Jøran Kjerpeseth, Maarit K. Leinonen, Oskar Halfdanarson, Øystein Karlstad, Pär Karlsson, Morten Andersen, Kari Furu, Vidar Hjellvik, (2021). A common data model for harmonization in the Nordic Pregnancy Drug Safety Studies (NorPreSS). Norsk Epidemiologi s. 117-135. doi: 10.5324/nje.v29i1-2.4053
- Jørgen G. Bramness, Vidar Hjellvik, Audun Stubhaug, Svetlana Skurtveit, (2021). Possible opioid-saving effect of cannabis-based medicine using individual-based data from the Norwegian Prescription Database. Basic & Clinical Pharmacology & Toxicology s. 1-9. doi: 10.1111/bcpt.13660
- Kari Furu, Ellen Barth Aares, Vidar Hjellvik, Øystein Karlstad, (2021). Hormonal contraceptive use in Norway, 2006-2020, by contraceptive type, age and county: A nationwide register-based study. Norsk Epidemiologi s. 55-62. doi: 10.5324/nje.v29i1-2.4046
- Anne Efjestad, Hege Ihle-Hansen, Vidar Hjellvik, Knut Engedal, Hege Salvesen Blix, (2021). Sex differences in psychotropic and analgesic drug use before and after initiating treatment with acetylcholinesterase inhibitors. PLOS ONE doi: 10.1371/journal.pone.0243804
- Ingvild Odsbu, Marte Handal, Vidar Hjellvik, Petter Chr. Borchgrevink, Thomas Clausen, Aleksi Hamina, Torgeir Gilje Lid, Ragnar Nesvåg, Svetlana Ondrasova Skurtveit, (2021). Bruk av andre vanedannende legemidler blant opioidbrukere med langvarige smerter. Norsk Epidemiologi s. 45-53. doi: 10.5324/nje.v29i1-2.4045
- Olav Magnus Fredheim, Svetlana Ondrasova Skurtveit, Per Sjøgren, Mohammad Belal Aljabri, Vidar Hjellvik, (2021). Prescriptions of analgesics during chronic cancer disease trajectories: A complete national cohort study. Pharmacoepidemiology and Drug Safety s. 1504-1513. doi: 10.1002/pds.5329
- Anders Engeland, Sara Ghaderi, Isabel dos-Santos-Silva, Kari Furu, Vidar Hjellvik, Rune Kvåle, Tone Bjørge, (2021). Prescribed drugs in 27 000 individuals after diagnosis of colorectal cancer: A population-based cohort study. Pharmacoepidemiology and Drug Safety s. 1037-1048. doi: 10.1002/pds.5243
- Beate Oerbeck, Kristin Romvig Overgaard, Vidar Hjellvik, Lars Lien, Jørgen G Bramness, (2021). The Use of Antidepressants, Antipsychotics, and Stimulants in Youth Residential Care. Journal of child and adolescent psychopharmacology s. 350-357. doi: 10.1089/cap.2020.0123
- Wenche Nystad, Vidar Hjellvik, Inger Kristin Larsen, Inger Kristine Holtermann Ariansen, Eyvind Helland, Knut Ivar Johansen, Johanne Gulbrandsen, Hanne Løvdal Gulseth, Helena Niemi Eide, Siri Eldevik Håberg, Øystein Karlstad, Inger Johanne Bakken, (2020). Underlying conditions in adults with COVID-19. Tidsskrift for Den norske legeforening (Tidsskriftet) doi: 10.4045/tidsskr.20.0512
- Ketil Størdal, Inger Johanne Landsjøåsen Bakken, Margrethe Greve-Isdahl, Claus Klingenberg, Eyvind Helland, Wenche Nystad, Vidar Hjellvik, Hanne Løvdal Gulseth, (2020). Sars-CoV-2 hos barn og ungdom i Norge: Påvist smitte, sykehusinnleggelser og underliggende tilstander. Tidsskrift for Den norske legeforening (Tidsskriftet) s. 1-9. doi: 10.4045/tidsskr.20.0457
- Milada Mahic, Sonia Hernandez-Diaz, Mollie Wood, Helle Kieler, Ingvild Odsbu, Mette Nørgaard, Buket Öztürk, Brian T. Bateman, Vidar Hjellvik, Svetlana Skurtveit, Marte Handal, (2020). In utero opioid exposure and risk of infections in childhood: A multinational Nordic cohort study. Pharmacoepidemiology and Drug Safety s. 1596-1604. doi: 10.1002/pds.5088
- Svetlana Skurtveit, Vidar Hjellvik, Solveig Sakshaug, Petter Chr. Borchgrevink, Børge Myrlund Larsen, Thomas Clausen, Eva Skovlund, Emilie Elise Heggen, Marte Handal, (2020). Forskrivning av opioider på blå resept mot langvarige smerter. Tidsskrift for Den norske legeforening (Tidsskriftet) doi: 10.4045/tidsskr.20.0153
- Yury Kiselev, Marte Handal, Vidar Hjellvik, Ted Reichborn-Kjennerud, Camilla Stoltenberg, Pål Suren, Alexandra Havdahl, Svetlana Skurtveit, (2020). Nationwide study of neuropsychiatric comorbidity and medicines use in children with autism spectrum disorder in Norway. Frontiers in Psychiatry s. 1-8. doi: 10.3389/fpsyt.2020.596032
- Ingvild Holdø, Jørgen Gustav Bramness, Marte Handal, Berit Hjelde Hansen, Vidar Hjellvik, Svetlana Skurtveit, (2020). Association Between Prescribed Hypnotics in Infants and Toddlers and Later ADHD: A Large Cohort Study from Norway. Child Psychiatry and Human Development doi: 10.1007/s10578-020-01039-9
- Olav Magnus Fredheim, Svetlana Skurtveit, Jon Håvard Loge, Per Sjøgren, Marte Handal, Vidar Hjellvik, (2020). Prescription of analgesics to long-term survivors of cancer in early adulthood, adolescence and childhood in Norway: a national cohort study. Pain s. 1083-1091. doi: 10.1097/j.pain.0000000000001800
- Beate Ørbeck, Kristin Romvig Øvergaard, Vidar Hjellvik, Jørgen Gustav Bramness, Berit M Hjelde Hansen, Lars Lien, (2020). The Use of Sleep Medication in Youth Residential Care. Journal of child and adolescent psychopharmacology s. 335-341. doi: 10.1089/cap.2019.0172
- Anne Efjestad, Hege Ihle-Hansen, Vidar Hjellvik, Knut Engedal, Hege Salvesen Blix, (2019). Drug Use before and after Initiating Treatment with Acetylcholinesterase Inhibitors. Dementia and Geriatric Cognitive Disorders Extra s. 196-206. doi: 10.1159/000497307
- Vidar Hjellvik, Marie L. de Bruin, Sven Ove Samuelsen, Øystein Karlstad, Morten Andersen, Jari Haukka, Peter Vestergaard, Frank de Vries, Kari Furu, (2019). Adjusting for unmeasured confounding using validation data: Simplified two-stage calibration for survival and dichotomous outcomes. Statistics in Medicine doi: 10.1002/sim.8131
- Olav Magnus Fredheim, Svetlana Skurtveit, Marte Handal, Vidar Hjellvik, (2019). A complete national cohort study of prescriptions of analgesics and benzodiazepines to cancer survivors in Norway 10 years after diagnosis. Pain s. 852-859. doi: 10.1097/j.pain.0000000000001459
- Marta Ebbing, Anne Reneflot, Vidar Hjellvik, Øyvind Næss, Helle Margrete Meltzer, (2018). Kunnskapskilder for folkehelse.
- Ragnar Nesvåg, Jørgen Gustav Bramness, Marte Handal, Ingeborg Hartz, Vidar Hjellvik, Svetlana Skurtveit, (2018). The incidence, psychiatric co-morbidity and pharmacological treatment of severe mental disorders in children and adolescents. European psychiatry s. 16-22. doi: 10.1016/j.eurpsy.2017.12.009
- Anders Engeland, Tone Bjørge, Kari Klungsøyr, Vidar Hjellvik, Svetlana Skurtveit, Kari Furu, (2018). Trends in prescription drug use during pregnancy and postpartum in Norway, 2005 to 2015. Pharmacoepidemiology and Drug Safety s. 995-1004. doi: 10.1002/pds.4577
- Svetlana Skurtveit, Jørgen Gustav Bramness, Vidar Hjellvik, Ingeborg Hartz, Ragnar Nesvåg, Lars Johan Hauge, Marte Handal, (2018). Increase in diagnosis of depressive disorders contributes to the increase in antidepressant use in adolescents. Acta Psychiatrica Scandinavica s. 413-421. doi: 10.1111/acps.12877
- Anne Efjestad, Hege Ihle-Hansen, Vidar Hjellvik, Hege Salvesen Blix, (2017). Comedication and treatment length in users of acetylcholinesterase inhibitors. Dementia and Geriatric Cognitive Disorders Extra s. 30-40. doi: 10.1159/000454948
- Anna But, Marie L de Bruin, Marloes T Bazelier, Vidar Hjellvik, Morten Andersen, Anssi Auvinen, Jakob Starup-Linde, Marjanka K Schmidt, Kari Furu, Frank de Vries, Øystein Karlstad, Nils Ekström, Jari Haukka, (2017). Cancer risk among insulin users: comparing analogues with human insulin in the CARING five-country cohort study. Diabetologia s. 1691-1703. doi: 10.1007/s00125-017-4312-5
- Solveig Sakshaug, Marte Handal, Vidar Hjellvik, Christian Lie Berg, Åse Ripel, Ingebjørg G. Gustavsen, Jørg Mørland, Svetlana Skurtveit, (2017). Long-term Use of Z-Hypnotics and Co-Medication with Benzodiazepines and Opioids. Basic & Clinical Pharmacology & Toxicology s. 292-298. doi: 10.1111/bcpt.12684
- Ragnar Nesvåg, Ingeborg Hartz, Jørgen Gustav Bramness, Vidar Hjellvik, Marte Handal, Svetlana Skurtveit, (2016). Mental disorder diagnoses among children and adolescents who use antipsychotic drugs. European Neuropsychopharmacology s. 1412-1418. doi: 10.1016/j.euroneuro.2016.07.001
- Ingeborg Hartz, Svetlana Skurtveit, Vidar Hjellvik, Kari Furu, Ragnar Nesvåg, Marte Handal, (2016). Antidepressant drug use among adolescents during 2004–2013: a population-based register linkage study. Acta Psychiatrica Scandinavica s. 420-429. doi: 10.1111/acps.12633
- Marte Handal, Solveig Sakshaug, Vidar Hjellvik, Christian Lie Berg, Svetlana Skurtveit, (2015). Kjønnsforskjeller i bruk av vanedannende legemidler i Norge. Norsk Farmaceutisk Tidsskrift (NFT) s. 27-31.
- Hege Salvesen Blix, DIDRIK FRIMANN VESTRHEIM, Vidar Hjellvik, Dagfinn Skaare, Andreas Christensen, Martin Steinbakk, (2015). Antibiotic prescriptions and cycles of Mycoplasma pneumoniae infections in Norway: can a nationwide prescription register be used for surveillance?. Epidemiology and Infection s. 1884-1892. doi: 10.1017/S0950268814002908
- Bjørn Heine Strand, Ellen Melbye Langballe, Vidar Hjellvik, Marte Handal, Øyvind Næss, Gun Peggy Knudsen, Helga Refsum, Kristian Tambs, Per Nafstad, Henrik Schirmer, Astrid Liv Mina Bergem, Randi Selmer, Knut Arne Engedal, Per Magnus, Espen Bjertness, (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 s. 124-130. doi: 10.1016/j.jns.2012.10.018
- Øystein Karlstad, Jakob Starup-Linde, Peter Vestergaard, Vidar Hjellvik, Marloes T Bazelier, Marjanka K Schmidt, Morten Andersen, Anssi Auvinen, Jari Haukka, Kari Furu, Frank de Vries, Marie L De Bruin, (2013). Use of insulin and insulin analogs and risk of cancer - systematic review and meta-analysis of observational studies. Current Drug Safety s. 333-348. doi: 10.2174/15680266113136660067
- Christian Lie Berg, Hege Salvesen Blix, Olaug Sveinsgjerd Fenne, Kari Furu, Vidar Hjellvik, Kari Jansdotter Husabø, Irene Litleskare, Marit Rønning, Solveig Sakshaug, Randi Marie Selmer, Anne-Johanne Søgaard, Sissel Marie Torheim, (2018). The Norwegian Prescription Database 2013–2017. Topic: Drug use in the elderly .
- Kari Furu, Vidar Hjellvik, Ingeborg Hartz, Øystein Karlstad, Svetlana Skurtveit, Hege Salvesen Blix, Hanne Strøm, Randi Marie Selmer, (2018). Legemiddelbruk hos barn og unge i Norge 2008–2017.
- Jørgen Bramnes, Lena Catherine Lossius Westby, Vidar Hjellvik, Halvor Fauske, Lars Lien, (2018). Legemidler og deres håndtering i barnverninstitusjoner.
- Christian Lie Berg, Hege Salvesen Blix, Olaug Sveinsgjerd Fenne, Kari Furu, Vidar Hjellvik, Kari Jansdotter Husabø, Per Olav Kormeset, Solveig Sakshaug, Hanne Strøm, Sissel Marie Torheim, (2017). Reseptregisteret 2012–2016 / The Norwegian Prescription Database 2012–2016.
- Svetlana Ondrasova Skurtveit, Solveig Sakshaug, Vidar Hjellvik, Christian Lie Berg, Marte Handal, (2014). Bruk av vanedannende legemidler i Norge 2005 - 2013. Basert på data fra Reseptregisteret.
- Claudia Bruno, Carolyn E. Cesta, Vidar Hjellvik, Sinna Pilgaard Ulrichsen, Marte-Helene Bjørk, Buket Öztürk Esen, Malcolm B. Gillies, Mika Gissler, Alys Havard, Øystein Karlstad, Maarit Leinonen, Mette Nørgaard, Sallie-Anne Pearson, Johan Reutfors, Kari Furu, Jacqueline Mallory Cohen, Helga Zoega, (2025). Corrigendum to Antipsychotic use during pregnancy and risk of specific neurodevelopmental disorders and learning difficulties in children: a multinational cohort study [eClinicalMedicine 70 (2024) 102531/DOI: 10.1016/j.eclinm.2024.102531] (eClinicalMedicine (2024) 70, (S258953702400110X), (10.1016/j.eclinm.2024.102531)). EClinicalMedicine doi: 10.1016/j.eclinm.2025.103139
- Chaitra Srinivas, Øystein Karlstad, Hein Stigum, Kari Furu, Carolyn E. Cesta, Johan Reutfors, Vidar Hjellvik, Jennifer A. Hutcheon, Jacqueline Mallory Cohen, (2024). ADHD medication use in pregnancy and risk of miscarriage.
- Knut Eirik Dalene, Simon Lergenmuller, Vidar Hjellvik, Hein Stigum, Haakon Eduard Meyer, Wenche Nystad, Inger Kristin Larsen, Erik Reidar Sund, Steinar Krokstad, Laila Arnesdatter Hopstock, Ulf Ekelund, Lars Jøran Kjerpeseth, Inger Ariansen, (2024). Noncommunicable disease risk factor groups, socioeconomic position and longevity in Norway: a prospective cohort study of 576 299 men and women – the NCDNOR project.
- Simon Lergenmuller, Trude Eid Robsahm, Yngvar Nilssen, Knut Eirik Dalene, Wenche Nystad, Haakon Eduard Meyer, Hein Stigum, Vidar Hjellvik, Lars Jøran Kjerpeseth, Inger Ariansen, Inger Kristin Larsen, (2024). Patterns, prevalence, and risk of noncommunicable disease comorbidities and death in cancer patients: A comprehensive nationwide Norwegian registry study – the NCDNOR Project.
- Lars Jøran Kjerpeseth, Vidar Hjellvik, Inger Ariansen, Jørgen Gustav Bramness, Knut Eirik Dalene, Steinar Krokstad, Arnulf Langhammer, Inger Kristin Larsen, Simon Lergenmuller, Haakon Eduard Meyer, Øyvind Erik Næss, (2024). NCD multimorbidity in Norway 2010-2020 – a NCDNOR study.
- Lars Jøran Kjerpeseth, Vidar Hjellvik, Inger Ariansen, Jørgen Gustav Bramness, Knut Eirik Dalene, Steinar Krokstad, Inger Kristin Larsen, Haakon Eduard Meyer, Øyvind Erik Næss, Paz Lopez-Doriga Ruiz, Martin Steen Tesli, Wenche Nystad, (2024). Social disparities in multimorbidity of noncommunicable diseases in Norway 2010-2020 – an emerging challenge in a single-disease-focused healthcare system. Data from the NCDNOR project.
- Simon Lergenmuller, Trude Eid Robsahm, Yngvar Nilssen, Knut Eirik Dalene, Wenche Nystad, Haakon Eduard Meyer, Hein Stigum, Vidar Hjellvik, Lars Jøran Kjerpeseth, Inger Ariansen, Inger Kristin Larsen, (2024). Prevalence, Patterns, and Risk of Comorbidities and Death in Cancer Patients: A Nationwide Norwegian Registry Study – the NCDNOR Project.
- Knut Eirik Dalene, Simon Lergenmuller, Erik Reidar Sund, Steinar Krokstad, Laila Arnesdatter Hopstock, Wenche Nystad, Inger Kristin Larsen, Ulf Ekelund, Haakon Eduard Meyer, Hein Stigum, Vidar Hjellvik, Lars Jøran Kjerpeseth, Inger Ariansen, (2024). Latent risk factor profiles in the Norwegian adult population over time and their association with premature NCD mortality – the NCDNOR project..
- Gabriela Rolová, Anders Engeland, Ingvild Odsbu, Vidar Hjellvik, Svetlana Ondrasova Skurtveit, (2024). Mortality among patients with long-term prescription opioid use in Norway.
- T. Berge, Øyvind Erik Næss, Torbjørn Wisløff, L. H. Mortensen, Eva Skovlund, Øystein Karlstad, Vidar Hjellvik, Lars Jøran Kjerpeseth, Grace M. Egeland, Jannicke Igland, Grethe S. Tell, Emilie R. Hegelund, Mariam Anjum, Ingrid E. Christophersen, M Myrstad, A. Tveit, Inger Ariansen, (2023). Registry tool for stroke prevention in atrial fibrillation in Norway – RegTool AFNOR.
- Jørgen Gustav Bramness, Vidar Hjellvik, Anne Høye, Martin Steen Tesli, Marit Haram, Wenche Nystad, Steinar Krokstad, (2023). Studying the epidemiology of depressive disorders using central health registries in a Nordic setting – the NCDNOR project.
- Martin Steen Tesli, Vidar Hjellvik, Anders Andreas Krister Jangmo, Marit Haram, Inger Ariansen, Steinar Krokstad, Ronald Kessler, Lars Jøran Kjerpeseth, Wenche Nystad, Jørgen Gustav Bramness, (2023). A comprehensive exploration of comorbidity patterns between mental disorders and non-communicable somatic diseases.
- Lars Jøran Kjerpeseth, Vidar Hjellvik, Inger Ariansen, Jørgen Gustav Bramness, Knut Eirik Dalene, Steinar Krokstad, Inger Kristin Larsen, Haakon Eduard Meyer, Øyvind Erik Næss, Paz Lopez-Doriga Ruiz, Wenche Nystad, (2023). NCD multimorbidity in Norway 2010-2020 – a NCDNOR study.
- Siri Marie Solbakken, Haakon Eduard Meyer, Cecilie Dahl, Trine Elisabeth Finnes, Vidar Hjellvik, Christopher Sivert Nielsen, Tone Kristin Omsland, Hein Stigum, Kristin Holvik, (2023). The medication-based Rx-Risk Comorbidity Index and risk of hip fracture. A nationwide NOREPOS cohort study. Norsk Epidemiologi, Supplement s. 19-19.
- Erle Refsum, Kari Furu, Carolyn E. Cesta, Felix Wittström, Helga Zoega, Vidar Hjellvik, Jacqueline Mallory Cohen, (2023). Risk of major congenital malformations associated with topical retinoid use in pregnancy–Results from Nordic population-based cohorts.
- Trine Elisabeth Finnes, Vidar Hjellvik, Haakon Eduard Meyer, Kristin Holvik, (2023). Atorvastatin dose is not associated with risk of hip fracture in men after adjustment for comorbidity: the Norwegian Epidemiologic Osteoporosis Studies (NOREPOS). Aging Clinical and Experimental Research
- Sara Magelssen vambheim, Vidar Hjellvik, Ingvild Odsbu, Svetlana Ondrasova Skurtveit, Christopher Ekholdt, Lars-Petter Ness Granan, Audun Stubhaug, Per-Jostein Samuelsen, (2023). Postoperative Opioid Use in Norway - Patterns of Prolonged Use.
- Ingvild Odsbu, Vidar Hjellvik, Aleksi Hamina, Svetlana Ondrasova Skurtveit, (2023). Prevalence of pain-related and mental health diagnoses among persistent opioid users: a population-based registry-linkage study.
- Håkon Høydal Nestvold, Svetlana Ondrasova Skurtveit, Aleksi Hamina, Vidar Hjellvik, Ingvild Odsbu, (2023). Socioeconomic risk factors for long-term opioid use: a national registry-linkage study.
- Aleksi Hamina, Ingvild Odsbu, Vidar Hjellvik, Linn Gjersing, Torgeir Gilje Lid, Thomas Clausen, Svetlana Ondrasova Skurtveit, (2022). Fatal overdoses in a cohort of chronic pain patients.
- Kristin Holvik, Vidar Hjellvik, Øystein Karlstad, Nina Gunnes, Mari Hoff, Grethe S. Tell, Haakon Eduard Meyer, (2022). Implementing a medication-based index to account for comorbidity in pharmacoepidemiologic studies: The Rx-Risk Comorbidity Index.
- Wenche Nystad, Vidar Hjellvik, Steinar Krokstad, Erik Reidar Sund, Inger Kristin Larsen, Sameline Grimsgaard, Inger Ariansen, (2021). A life-course approach to prevent noncommunicable diseases in an ageing population – NCDNOR .
- Ingvild Odsbu, Marte Handal, Vidar Hjellvik, Svetlana Ondrasova Skurtveit, (2021). Trends in long-term use of prescribed opioids in Norway 2010-2019. Pharmacoepidemiology and Drug Safety s. 53-53. doi: 10.1002/pds.5305
- Ingvild Odsbu, Marte Handal, Vidar Hjellvik, Svetlana Ondrasova Skurtveit, (2021). Trends in long-term use of prescribed opioids in Norway 2010-2019.
- Ingvild Odsbu, Marte Handal, Vidar Hjellvik, Svetlana Ondrasova Skurtveit, (2021). Trends in long-term use of prescribed opioids in Norway 2010-2019. .
- Trine Elisabeth Finnes, Vidar Hjellvik, Haakon Eduard Meyer, Kristin Holvik, (2021). Are High-Dose Statin Users at Higher Risk of Hip Fractures? A Population-Wide Registry-Based Cohort Study from NOREPOS. Journal of Bone and Mineral Research s. 306-306.
- Kristin Holvik, Vidar Hjellvik, Øystein Karlstad, Nina Gunnes, Mari Hoff, Grethe Seppola Tell, Haakon Eduard Meyer, (2020). The contribution of an extensive medication-based comorbidity index to explain excess mortality after hip fracture in Norway. Therapeutic Advances in Musculoskeletal Disease (TAMD) s. 53-53. doi: 10.1177/1759720X20969289
- Svetlana Skurtveit, Yury Kiselev, Marte Handal, Camilla Stoltenberg, Ted Reichborn-Kjennerud, Pål Suren, Alexandra Havdahl, Vidar Hjellvik, (2019). Co-Occurring Neuropsychiatric Diagnoses and Use of Psychotropic Drugs in Children with Autism Spectrum Disorder. Pharmacoepidemiology and Drug Safety doi: 10.10002/pds.4864
- Svetlana Skurtveit, Jørgen Gustav Bramness, Vidar Hjellvik, Ingeborg Hartz, Ragnar Nesvåg, Lars Johan Hauge, Marte Handal, (2018). Increase in diagnosis of depressive disorders contributes to the increase in antidepressant use in adolescents. Pharmacoepidemiology and Drug Safety
- Ingvild Holdø, Jørgen Gustav Bramness, Marte Handal, Berit Marina Hjelde Hansen, Vidar Hjellvik, Svetlana Skurtveit, (2017). Infants With dispensed hypnotics have a greater risk of developing hyperkinetic disorder in School age.
- Ingvild Holdø, Jørgen Gustav Bramness, Svetlana Skurtveit, Marte Handal, Berit Hjelde Hansen, Vidar Hjellvik, (2017). Infants with Sleep Problems have a Greater Risk of Developing ADHD in school age.
- Marte Handal, Milada Mahic, Vidar Hjellvik, Ingunn Olea Lund, Inger Øhman, Birgitta Norstedt Wikner, Helle Kieler, Mette Nørgaard, Sonia Hernandez-Diaz, Jørgen Gustav Bramness, Edle Ravndal, Erja Halmesmaki, Svetlana Skurtveit, (2016). Background and design: A Scandinavian cohort of pregnant women in opioid maintenance treatment during pregnancy: long term consequences for the child (ScopeOMT).
- Ingeborg Hartz, Svetlana Skurtveit, Vidar Hjellvik, Kari Furu, Ragnar Nesvåg, Marte Handal, (2016). Antidepressant Drug use Among Adolescents in Norway from 2004 to 2013‐ A Population‐Based Register Study. Pharmacoepidemiology and Drug Safety
- Ragnar Nesvåg, Ingeborg Hartz, Jørgen Gustav Bramness, Vidar Hjellvik, Marte Handal, Svetlana Skurtveit, (2016). Differences Between Genders in Antipsychotic Medication Among Children and Adolescents – Patterns in Use and Underlying Mental Disorders. Pharmacoepidemiology and Drug Safety
- Marte Handal, Milada Mahic, Vidar Hjellvik, Ingunn Olea Lund, Inger Øhman, Birgitta Nordstedt Wikner, Helle Kieler, Mette Nørgaard, Sonia Hernandez-Diaz, Jørgen Gustav Bramness, Edle Ravndal, Erja Halmesmæki, Svetlana Skurtveit, (2016). Background and design: A Scandinavian cohort of pregnant women in opioid maintenance treatment during pregnancy: long term consequences for the child (ScopeOMT).
- Ingeborg Hartz, Svetlana Skurtveit, Vidar Hjellvik, Kari Furu, Ragnar Nesvåg, Marte Handal, (2015). Antidepressant drug use among adolescents during 2004-2013 – a population-based linkage study between the Nationwide prescription database and patient register . Norsk Epidemiologi, Supplement s. 95-95.
- Christian Lie Berg, Svetlana Skurtveit, Solveig Sakshaug, Vidar Hjellvik, Marte Handal, (2015). Reduced Prescribing of Benzodiazepines in Denmark and Norway. Basic & Clinical Pharmacology & Toxicology s. 457-458. doi: 10.1111/bcpt.12377