Jon Michael Gran

• Keogh, Ruth H.; Seaman, Shaun; Gran, Jon Michael & Vansteelandt, Stijn (2021). Simulating longitudinal data from marginal structural models using the additive hazard model. Biometrical Journal. ISSN 0323-3847. 63(7), p. 1526–1541. doi: 10.1002/bimj.202000040. Full text in Research Archive
• Torp, Henrik Andreas; Skurtveit, Svetlana Ondrasova; Skaga, Nils Oddvar; Gustavsen, Ingebjørg G.; Gran, Jon Michael & Rosseland, Leiv Arne (2021). Pre-injury dispensing of psychoactive prescription drugs in a ten years trauma population: a retrospective registry analysis. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. ISSN 1757-7241. 29. doi: 10.1186/s13049-021-00939-6. Full text in Research Archive
• Maltzahn, Niklas; Hoff, Rune; Aalen, Odd O.; Mehlum, Ingrid S.; Putter, Hein & Gran, Jon Michael (2021). A hybrid landmark Aalen-Johansen estimator for transition probabilities in partially non-Markov multi-state models. Lifetime Data Analysis. ISSN 1380-7870. 27, p. 737–760. doi: 10.1007/s10985-021-09534-4. Full text in Research Archive Show summary

  Multi-state models are increasingly being used to model complex epidemiological and clinical outcomes over time. It is common to assume that the models are Markov, but the assumption can often be unrealistic. The Markov assumption is seldomly checked and violations can lead to biased estimation of many parameters of interest. This is a well known problem for the standard Aalen-Johansen estimator of transition probabilities and several alternative estimators, not relying on the Markov assumption, have been suggested. A particularly simple approach known as landmarking have resulted in the Landmark-Aalen-Johansen estimator. Since landmarking is a stratification method a disadvantage of landmarking is data reduction, leading to a loss of power. This is problematic for “less traveled” transitions, and undesirable when such transitions indeed exhibit Markov behaviour. Introducing the concept of partially non-Markov multi-state models, we suggest a hybrid landmark Aalen-Johansen estimator for transition probabilities. We also show how non-Markov transitions can be identified using a testing procedure. The proposed estimator is a compromise between regular Aalen-Johansen and landmark estimation, using transition specific landmarking, and can drastically improve statistical power. We show that the proposed estimator is consistent, but that the traditional variance estimator can underestimate the variance of both the hybrid and landmark estimator. Bootstrapping is therefore recommended. The methods are compared in a simulation study and in a real data application using registry data to model individual transitions for a birth cohort of 184 951 Norwegian men between states of sick leave, disability, education, work and unemployment.

• Stenehjem, Jo Steinson; Røise, Olav; Nordseth, Trond; Clausen, Thomas; Natvig, Bård & Skurtveit, Svetlana Ondrasova [Show all 10 contributors for this article] (2021). Injury Prevention and long-term Outcomes following Trauma - The IPOT project: a protocol for prospective nationwide registry-based studies in Norway. BMJ Open. ISSN 2044-6055. 11(5). doi: 10.1136/bmjopen-2020-046954. Full text in Research Archive
• Bowe, Sophie; Mitlid-Mork, Birgitte; Georgieva, Antoniya; Gran, Jon M.; Redman, Christopher W.G. & Staff, Anne Cathrine [Show all 7 contributors for this article] (2021). The association between placenta-associated circulating biomarkers and composite adverse delivery outcome of a likely placental cause in healthy post-date pregnancies. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 100(10), p. 1893–1901. doi: 10.1111/aogs.14223. Full text in Research Archive
• Juhl, Claus Bogh; Holst, René; Mundbjerg, Lene Hymøller; Stolberg, Charlotte; Gran, Jon Michael & Thomsen, Gert Frank (2021). Effect of bariatric surgery on employment status -a 7 years controlled nationwide registry study. BMJ Open. ISSN 2044-6055. 11(6). doi: 10.1136/bmjopen-2020-042845. Full text in Research Archive
• Øjlert, Åsa Kristina; Nebdal, Daniel J.H.; Lund-Iversen, Marius; Ellefsen, Renée Åstrøm; Brustugun, Odd Terje & Gran, Jon Michael [Show all 8 contributors for this article] (2020). Immune checkpoint blockade in the treatment of advanced non-small cell lung cancer–predictors of response and impact of previous radiotherapy. Acta Oncologica. ISSN 0284-186X. p. 1–9. doi: 10.1080/0284186X.2020.1854851. Full text in Research Archive
• Mitlid-Mork, Birgitte; Bowe, Sophie; Gran, Jon Michael; Bolstad, Nils; Berg, Jens Petter & Redman, Christopher W.G. [Show all 8 contributors for this article] (2020). Maternal placental growth factor and soluble fms-like tyrosine kinase-1 reference ranges in post-term pregnancies: A prospective observational study. PLOS ONE. ISSN 1932-6203. 15:e0240473(10), p. 1–14. doi: 10.1371/journal.pone.0240473. Full text in Research Archive
• Gunnes, Nina; Gjessing, Håkon K.; Bakken, Inger Johanne Landsjøåsen; Ghaderi, Sara; Gran, Jon Michael & Hungnes, Olav [Show all 13 contributors for this article] (2020). Seasonal and pandemic influenza during pregnancy and risk of fetal death: A Norwegian registry‑based cohort study. European Journal of Epidemiology (EJE). ISSN 0393-2990. 35, p. 371–379. doi: 10.1007/s10654-020-00600-z. Full text in Research Archive
• Gottschalk, Marthe Sørli; Eskild, Anne; Hofvind, Solveig; Gran, Jon Michael & Bjelland, Elisabeth Krefting (2020). Temporal trends in age at menarche and age at menopause: a population study of 312 656 women in Norway. Human Reproduction. ISSN 0268-1161. 35(2), p. 464–471. doi: 10.1093/humrep/dez288. Full text in Research Archive
• Bjelland, Elisabeth Krefting; Gran, Jon Michael; Hofvind, Solveig & Eskild, Anne (2020). The association of birthweight with age at natural menopause: a population study of women in Norway. International Journal of Epidemiology. ISSN 0300-5771. 49(2), p. 528–536. doi: 10.1093/ije/dyz207. Full text in Research Archive
• Kvakkestad, Kristin Marie; Gran, Jon Michael; Eritsland, Jan; Hansen, Charlotte Holst; Fossum, Eigil & Andersen, Geir Øystein [Show all 7 contributors for this article] (2019). Long-term survival after invasive or conservative strategy in elderly patients with non-ST-elevation myocardial infarction: A prospective cohort study. Cardiology. ISSN 0008-6312. p. 1–11. doi: 10.1159/000503442. Full text in Research Archive
• Djordjilovic, Vera; Page, Christian Magnus; Gran, Jon Michael; Nøst, Therese Haugdahl; Sandanger, Torkjel M & Veierød, Marit Bragelien [Show all 7 contributors for this article] (2019). Global test for high-dimensional mediation: Testing groups of potential mediators. Statistics in Medicine. ISSN 0277-6715. 38(18), p. 3346–3360. doi: 10.1002/sim.8199. Full text in Research Archive
• Sundbakk, Lene Maria; Wood, Mollie; Gran, Jon Michael & Nordeng, Hedvig Marie Egeland (2019). Impact of prenatal exposure to benzodiazepines and z-hypnotics on behavioral problems at 5 years of age: A study from the Norwegian Mother and Child Cohort Study. PLOS ONE. ISSN 1932-6203. 14(6). doi: 10.1371/journal.pone.0217830. Full text in Research Archive
• Ofstad, Anne Pernille; Sommer, Christine; Birkeland, Kåre I.; Bjørgaas, Marit Ragnhild Rokne; Gran, Jon Michael & Gulseth, Hanne Løvdal [Show all 7 contributors for this article] (2019). Comparison of the associations between non-traditional and traditional indices of adiposity and cardiovascular mortality: an observational study of one million person-years of follow-up. International Journal of Obesity. ISSN 0307-0565. 43(5), p. 1082–1092. doi: 10.1038/s41366-019-0353-9. Full text in Research Archive
• Hoff, Rune; Putter, Hein; Mehlum, Ingrid Sivesind & Gran, Jon Michael (2019). Landmark estimation of transition probabilities in non-Markov multi-state models with covariates. Lifetime Data Analysis. ISSN 1380-7870. 25(4), p. 660–680. doi: 10.1007/s10985-019-09474-0. Full text in Research Archive
• Dieset, Ingrid; Mørch, Ragni Helene; Hope, Sigrun; Hoseth, Eva Zsuzsanna; Reponen, Elina Johanna & Gran, Jon Michael [Show all 16 contributors for this article] (2018). An association between YKL-40 and type 2 diabetes in psychotic disorders. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 139, p. 37–45. doi: 10.1111/acps.12971.
• Svendsen, Karianne; Telle-Hansen, Vibeke; Telle-Hansen, Vibeke; Mørch-Reiersen, Lisa T.; Mørch-Reiersen, Lisa Therese & Garstad, Kjersti W. [Show all 14 contributors for this article] (2018). A randomized controlled trial in Norwegian pharmacies on effects of risk alert and advice in people with elevated cardiovascular risk. Preventive Medicine Reports. ISSN 2211-3355. 12, p. 79–86. doi: 10.1016/j.pmedr.2018.08.004. Full text in Research Archive
• Shetelig, Christian; Limalanathan, Shanmuganathan; HOFFMANN, PAVEL; Seljeflot, Ingebjørg; Gran, Jon Michael & Eritsland, Jan [Show all 7 contributors for this article] (2018). Association of IL-8 With Infarct Size and Clinical Outcomes in Patients With STEMI. Journal of the American College of Cardiology. ISSN 0735-1097. 72(2), p. 187–198. doi: 10.1016/j.jacc.2018.04.053.
• Hoff, Rune; Corbett, Karina; Mehlum, Ingrid Sivesind; Mohn, Ferdinand A; Kristensen, Petter & Hanvold, Therese Nordberg [Show all 7 contributors for this article] (2018). The impact of completing upper secondary education - a multi-state model for work, education and health in young men. BMC Public Health. ISSN 1471-2458. 18. doi: 10.1186/s12889-018-5420-y. Full text in Research Archive
• Iuliano, A Danielle; Roguski, Katherine M; Chang, Howard H; Muscatello, David J; Palekar, Rakhee & Tempia, Stefano [Show all 25 contributors for this article] (2018). Estimates of global seasonal influenza-associated respiratory mortality: a modelling study. The Lancet. ISSN 0140-6736. 391(10127), p. 1285–1300. doi: 10.1016/S0140-6736%2817%2933293-2.
• Aalen, Odd O.; Gran, Jon Michael; Røysland, Kjetil; Stensrud, Mats Julius & Strohmaier, Susanne (2018). Feedback and Mediation in Causal Inference Illustrated by Stochastic Process Models. Scandinavian Journal of Statistics. ISSN 0303-6898. 45(1), p. 62–86. doi: 10.1111/sjos.12286.
• Gran, Jon Michael; Hoff, Rune; Røysland, Kjetil; Ledergerber, Bruno; Young, James & Aalen, Odd O. (2017). Estimating the treatment effect on the treated under time-dependent confounding in an application to the Swiss HIV Cohort Study. The Journal of the Royal Statistical Society, Series C (Applied Statistics). ISSN 0035-9254. 67(1), p. 103–125. doi: 10.1111/rssc.12221. Full text in Research Archive
• Belay, Denekew Bitew; Kifle, Yehenew Getachew; Goshu, Ayele Taye; Gran, Jon Michael; Yewhalaw, Delenasaw & Duchateau, Luc [Show all 7 contributors for this article] (2017). Joint Bayesian modeling of time to malaria and mosquito abundance in Ethiopia. BMC Infectious Diseases. ISSN 1471-2334. 17(1). doi: 10.1186/s12879-017-2496-4. Full text in Research Archive
• Astrup, Guro Lindviksmoen; Rustøen, Tone; Hofsø, Kristin; Gran, Jon Michael & Bjordal, Kristin (2017). Symptom burden and patient characteristics: Association with quality of life in patients with head and neck cancer undergoing radiotherapy. Head and Neck. ISSN 1043-3074. 39(10), p. 2114–2126. doi: 10.1002/hed.24875.
• Shetelig, Christian; Shanmuganathan, Limalanathan; Eritsland, Jan; HOFFMANN, PAVEL; Seljeflot, Ingebjørg & Gran, Jon Michael [Show all 9 contributors for this article] (2017). Osteoprotegerin levels in ST-elevation myocardial infarction: Temporal profile and association with myocardial injury and left ventricular function. PLOS ONE. ISSN 1932-6203. 12:e0173034(3), p. 1–14. doi: 10.1371/journal.pone.0173034. Full text in Research Archive
• Prague, Mélanie; Commenges, Daniel; Gran, Jon Michael; Ledergerber, Bruno; Young, Jim & Furrer, Hansjakob [Show all 7 contributors for this article] (2017). Dynamic models for estimating the effect of HAART on CD4 in observational studies: Application to the Aquitaine Cohort and the Swiss HIV Cohort Study. Biometrics. ISSN 0006-341X. 73(1), p. 294–304. doi: 10.1111/biom.12564.
• Torvik, Kristin; Narverud, Ingunn; Ottestad, Inger; Svilaas, Arne B; Gran, Jon Michael & Retterstøl, Kjetil [Show all 11 contributors for this article] (2016). Dietary counseling is associated with an improved lipid profile in children with familial hypercholesterolemia. Atherosclerosis. ISSN 0021-9150. 252, p. 21–27. doi: 10.1016/j.atherosclerosis.2016.07.913.
• Aalen, Odd O.; Røysland, Kjetil; Gran, Jon Michael; Kouyos, Roger & Lange, Theis (2016). Can we believe the DAGs? A comment on the relationship between causal DAGs and mechanisms. Statistical Methods in Medical Research. ISSN 0962-2802. 25(5), p. 2294–2314. doi: 10.1177/0962280213520436.
• Narverud, Ingunn; van Lennep, Jeanine Roeters; Christensen, Jacob Juel; Versmissen, Jorie; Gran, Jon Michael & Iversen, Per Ole [Show all 15 contributors for this article] (2015). Maternal inheritance does not predict cholesterol levels in children with familial hypercholesterolemia. Atherosclerosis. ISSN 0021-9150. 243(1), p. 155–160. doi: 10.1016/j.atherosclerosis.2015.09.014.
• Gran, Jon Michael; Lie, Stein Atle; Øyeflaten, Irene Larsen; Borgan, Ørnulf & Aalen, Odd O. (2015). Causal inference in multi-state models-sickness absence and work for 1145 participants after work rehabilitation. BMC Public Health. ISSN 1471-2458. 15:1082. doi: 10.1186/s12889-015-2408-8. Full text in Research Archive
• Corbett, Karina; Gran, Jon Michael; Kristensen, Petter & Mehlum, Ingrid Sivesind (2015). Adult social position and sick leave: the mediating effect of physical workload. Scandinavian Journal of Work, Environment and Health. ISSN 0355-3140. 41(6), p. 542–553. doi: 10.5271/sjweh.3525.
• Hoff, Rune; Gran, Jon Michael & Daniel, Farewell (2014). Farewell’s Linear Increments Model for Missing Data: The FLIM Package. The R Journal. ISSN 2073-4859. 6(2), p. 137–150. doi: 10.32614/rj-2014-030.
• Skjeldestad, Finn Egil; Bjørnholt, Jørgen; Gran, Jon Michael & Eriksen, Hanne-Merete (2014). The effect of antibiotic prophylaxis guidelines on surgical-site infections associated with cesarean delivery. International Journal of Gynecology & Obstetrics. ISSN 0020-7292. 128(2), p. 126–130. doi: 10.1016/j.ijgo.2014.08.018.
• Røislien, Jo; Clausen, Thomas; Gran, Jon Michael & Bukten, Anne (2014). Accounting for individual differences and timing of events: Estimating the effect of treatment on criminal convictions in heroin users. BMC Medical Research Methodology. ISSN 1471-2288. 14(68). doi: 10.1186/1471-2288-14-68.
• Gran, Jon Michael; Kacelnik, Oliver; Grjibovski, Andrej; Aavitsland, Preben & Iversen, Bjørn Gunnar (2013). Counting pandemic deaths: comparing reported numbers of death from influenza A(H1N1)pdm09 with estimated excess mortality. Influenza and Other Respiratory Viruses. ISSN 1750-2640. 7(6), p. 1370–1379. doi: 10.1111/irv.12125. Full text in Research Archive
• Aalen, Odd O.; Røysland, Kjetil; Gran, Jon Michael & Ledergerber, Bruno (2012). Causality, mediation and time: a dynamic viewpoint. Journal of the Royal Statistical Society: Series A (Statistics in Society). ISSN 0964-1998. 175(4), p. 831–861. doi: 10.1111/j.1467-985X.2011.01030.x.
• De Blasio, Birgitte Freiesleben; Xue, Yiting; Iversen, Bjørn Gunnar & Gran, Jon Michael (2012). Estimating influenza-related sick leave in Norway: Was work absenteeism higher during the 2009 A(H1N1) pandemic compared to seasonal epidemics? Eurosurveillance. ISSN 1025-496X. 17(33), p. 15–25.
• Røysland, Kjetil; Gran, Jon Michael; Ledergerber, Bruno; von Wyl, Viktor; Young, James A. & Aalen, Odd O. (2011). Analyzing direct and indirect effects of treatment using dynamic path analysis applied to data from the Swiss HIV Cohort Study. Statistics in Medicine. ISSN 0277-6715. 30(24), p. 2947–2958. doi: 10.1002/sim.4324.
• Bentsen, Håvard; Solberg, Dag Kristen; Refsum, Helge; Gran, Jon Michael; Bøhmer, Thomas & Torjesen, Peter A [Show all 8 contributors for this article] (2011). Bimodal Distribution of Polyunsaturated Fatty Acids in Schizophrenia Suggests Two Endophenotypes of the Disorder. Biological Psychiatry. ISSN 0006-3223. 70(1), p. 97–105. doi: 10.1016/j.biopsych.2011.02.011.
• Reikvam, Dag Henrik; Perminow, Gøri Margrete; Lyckander, Lars Gustav; Gran, Jon Michael; Brandtzæg, Per & Vatn, Morten [Show all 7 contributors for this article] (2011). Increase of regulatory T cells in ileal mucosa of untreated pediatric Crohn's disease patients. Scandinavian Journal of Gastroenterology. ISSN 0036-5521. 46(5), p. 550–560. doi: 10.3109/00365521.2011.551887.
• Carlsen, Monica Hauger; Karlsen, Anette; Lillegaard, Inger Therese L.; Gran, Jon Michael; Drevon, Christian A & Blomhoff, Rune [Show all 7 contributors for this article] (2011). Relative validity of fruit and vegetable intake estimated from an FFQ, using carotenoid and flavonoid biomarkers and the method of triads. British Journal of Nutrition. ISSN 0007-1145. 105(10), p. 1530–1538. doi: 10.1017/S0007114510005246.
• Gran, Jon Michael; Iversen, Bjørn Gunnar; Hungnes, Olav & Aalen, Odd O. (2010). Estimating influenza-related excess mortality and reproduction numbers for seasonal influenza in Norway, 1975-2004. Epidemiology and Infection. ISSN 0950-2688. 138(11), p. 1559–1568. doi: 10.1017/S0950268810000671.
• Gran, Jon Michael; Røysland, Kjetil; Wolbers, Marcel; Didelez, Vanessa; Sterne, Jonathan AC & Ledergerber, Bruno [Show all 9 contributors for this article] (2010). A sequential Cox approach for estimating the causal effect of treatment in the presence of time-dependent confounding applied to data from the Swiss HIV Cohort Study. Statistics in Medicine. ISSN 0277-6715. 29(26), p. 2757–2768. doi: 10.1002/sim.4048.
• Haugaa, Kristina Hermann; Edvardsen, Thor; Leren, Trond P.; Gran, Jon Michael; Smiseth, Otto A. & Amlie, Jan Peder (2009). Left ventricular mechanical dispersion by tissue Doppler imaging: a novel approach for identifying high-risk individuals with long QT syndrome. European Heart Journal. ISSN 0195-668X. 30(3), p. 330–337. doi: 10.1093/eurheartj/ehn466.
• Gran, JM; Wasmuth, L; Amundsen, EJ; Lindqvist, Bo Henry & Aalen, OO (2008). Growth rates in epidemic models: Application to a model for HIV/AIDS progression. Statistics in Medicine. ISSN 0277-6715. 27, p. 4819–4836. doi: 10.1002/sim.3219. Show summary

  The most common quantity used to describe the growth of an epidemic when modelling infectious diseases is the basic reproduction number R0. While R0 is most appropriate for epidemics with short-lasting infections, long-lasting infections such as HIV/AIDS may call for the use of growth rates with other properties. For a group of multi-state compartment models we define both R0, the actual reproduction number Ra(t), and the intrinsic growth rate r .We study the relationship between these different reproduction numbers and growth rates and take a brief look at how they could be estimated from actual observed data. The work is illustrated by a model for HIV/AIDS progression among homosexual men in England and Wales. We conclude that other measures of growth, in addition to R0, give important supplementary information.

• Haugaa, Kristina Hermann; Edvardsen, Thor; Leren, TP; Gran, Jon Michael; Smiseth, Otto A. & Amlie, Jan Peder (2008). Left ventricular mechanical dispersion by tissue Doppler imaging: a novel approach for identifying high-risk individuals with long-QT syndrome. European Heart Journal. ISSN 0195-668X.

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• Uleberg, Oddvar; Stenehjem, Jo S.; Nordseth, Trond; Clausen, Thomas; Natvig, Bård & Skurtveit, Svetlana Ondrasova [Show all 12 contributors for this article] (2022). The injury prevention and outcomes following trauma (IPOT) project: is a nationwide registry-based study in Norway feasible?
• Grødeland, Gunnveig; Sørvoll, Ingvild Hausberg; Befring, Anne Kjersti; Gran, Jon Michael; Krokstad, Steinar & Vorland, lars (2021). Vent på vaksinen du får tilbudt i det nasjonale vaksineprogrammet. VG : Verdens gang. ISSN 0805-5203.
• Befring, Anne Kjersti; Sørvoll, Ingvild Hausberg; Grødeland, Gunnveig; Krokstad, Steinar; Gran, Jon Michael & Pettersen, Frank O. (2021). Tåler neppe at friske dør. Dagbladet. ISSN 0805-3766.
• Stenehjem, Jo S.; Røise, Olav; Nordseth, Trond; Clausen, Thomas; Natvig, Bård & Skurtveit, Svetlana Ondrasova [Show all 12 contributors for this article] (2021). Injury Prevention and long-term Outcomes following Trauma - the IPOT project: a protocol for prospective nationwide registry-based studies in Norway.
• Rosseland, Leiv Arne; Stenehjem, Jo S.; Nordseth, Trond; Clausen, Thomas; Natvig, Bård & Skurtveit, Svetlana Ondrasova [Show all 12 contributors for this article] (2021). The Injury Prevention and Outcomes following Trauma project: a prospective nationwide registry-based study in Norway.
• Gran, Jon Michael & Stensrud, Mats Julius (2021). Målforsøk. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 5. doi: 10.4045/tidsskr.20.0839.
• Gottschalk, Marthe Sørli; Eskild, Anne; Hofvind, Solveig; Gran, Jon Michael & Bjelland, Elisabeth Krefting (2020). Reply: Menarche age, menopausal age and cumulative exposure to endogenous estrogens. Human Reproduction. ISSN 0268-1161. doi: 10.1093/humrep/deaa276.
• Stensrud, Mats Julius & Gran, Jon Michael (2020). Randomisering under en pandemi. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 140(10). doi: 10.4045/tidsskr.20.0439.
• Gottschalk, Marthe Sørli; Eskild, Anne; Hofvind, Solveig; Gran, Jon Michael & Bjelland, Elisabeth Krefting (2019). Temporal trends in age at menarche and age at menopause: a population study of 312 656 women in Norway.
• Bjelland, Elisabeth Krefting; Gran, Jon Michael; Hofvind, Solveig & Eskild, Anne (2019). The association of birthweight with age at natural menopause. A population study of women in Norway.
• Gottschalk, Marthe Sørli; Eskild, Anne; Hofvind, Solveig; Gran, Jon Michael & Bjelland, Elisabeth Krefting (2019). Temporal trends in age at menarche and age at menopause: a population study of 312 656 women in Norway. Norsk Epidemiologi, Supplement. ISSN 0803-4206. 28, p. 77–77.
• Gottschalk, Marthe Sørli; Eskild, Anne; Hofvind, Solveig; Gran, Jon Michael & Bjelland, Elisabeth Krefting (2019). Temporal trends in age at menarche and age at menopause: a population study of 312 656 women in Norway.
• Bjelland, Elisabeth Krefting; Gran, Jon Michael; Hofvind, Solveig & Eskild, Anne (2019). The association of birthweight with age at natural menopause. A population study of women in Norway. Norsk Epidemiologi, Supplement. ISSN 0803-4206. 28, p. 78–78.
• Bjelland, Elisabeth Krefting; Gran, Jon Michael; Hofvind, Solveig & Eskild, Anne (2019). The association of birthweight with age at natural menopause. A population study of women in Norway.
• Gran, Jon Michael & Aalen, Odd O. (2019). Letter to the Editor: Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies (SMMR, Vol. 27, Issue 6, 2018). Statistical Methods in Medical Research. ISSN 0962-2802. 28(1), p. 321–322. doi: 10.1177/0962280218811177.
• Sundbakk, Lene Maria; Wood, Mollie; Gran, Jon Michael & Nordeng, Hedvig Marie Egeland (2018). Does prenatal exposure to benzodiazepines or z-hypnotics increase the risk of behavioral problems at 5 years? .
• Sundbakk, Lene Maria; Nordeng, Hedvig Marie Egeland; Wood, Mollie & Gran, Jon Michael (2017). Prenatal exposure to benzodiazepines or z-hypnotics and behavioral problems at 5 years of age: A study from the Norwegian Mother and Child cohort study.
• Narverud, Ingunn; Bogsrud, Martin Prøven; Roeters van Lennep, Jeanine; Christensen, Jacob J.; Gran, Jon Michael & Galema-Boers, Annette [Show all 10 contributors for this article] (2017). MATERNAL CHOLESTEROL LEVELS MAY PREDICT LDL CHOLESTEROL LEVELS IN CHILDREN WITH FAMILIAL HYPERCHOLESTEROLEMIA.
• Narverud, Ingunn; Bogsrud, Martin Prøven; Roeters van Lennep, Jeanine; Christensen, Jacob J.; Gran, Jon Michael & Galema-Boers, Annette [Show all 10 contributors for this article] (2017). MATERNAL CHOLESTEROL LEVELS MAY PREDICT LDL CHOLESTEROL LEVELS IN CHILDREN WITH FAMILIAL HYPERCHOLESTEROLEMIA.
• Narverud, Ingunn; Bogsrud, Martin Prøven; Roeters van Lennep, Jeanine; Christensen, Jacob J.; Gran, Jon Michael & Galema-Boers, Annette [Show all 10 contributors for this article] (2017). MATERNAL CHOLESTEROL LEVELS MAY PREDICT LDL CHOLESTEROL LEVELS IN CHILDREN WITH FAMILIAL HYPERCHOLESTEROLEMIA.
• Svendsen, Karianne; Retterstøl, Kjetil; Telle-Hansen, Vibeke; Jacobs, David R. Jr.; Mørch-Reiersen, Lisa T. & Garstad, Kjersti W. [Show all 7 contributors for this article] (2016). Changes in lifestyle and risk factor levels after identification of and alerting to high cardiovascular risk: a randomized controlled trial of healthy subjects visiting Norwegian pharmacies.
• Narverud, Ingunn; van Lennep, Jeanine Roeters; Christensen, Jacob J.; Versmissen, Jorie; Gran, Jon Michael & Iversen, Per Ole [Show all 14 contributors for this article] (2016). What is the impact of maternal inheritance of FH on lipids and CRP in children with FH?
• Mehlum, Ingrid Sivesind; Corbett, Karina; Gran, Jon Michael & Kristensen, Petter (2015). Do psychosocial working conditions mediate social inequalities in musculoskeletal and psychiatric sickness absence in a life-course perspective?
• Mehlum, Ingrid Alethe Sivesind; Corbett, Karina; Gran, Jon Michael & Kristensen, Petter (2014). The relationship between socioeconomic position, working conditions and sickness absence in a life-course perspective.
• Narverud, Ingunn; van Lennep, Jeanine Roeters; Christensen, Jacob Juel; Versmissen, Jorie; Gran, Jon Michael & Iversen, Per Ole [Show all 15 contributors for this article] (2014). Cardiovascular risk markers in a large cohort of children and adolescents with genetically verified familial hypercholestelemia show no inheritance-related but LDL receptor mutation type- and family history of cardiovascular disease-related variance.
• Dalen, E; Sponheim, D; Torsvik, H; Lind, E; Dyrhaug, O & Gran, Jon Michael [Show all 7 contributors for this article] (2008). ASGE and EPAGE guidelines are an important help to select and prioritise patients referred to colonoscopy. Scandinavian Journal of Gastroenterology. ISSN 0036-5521. 43, p. 36–36.
• Gran, Jon Michael (2008). Estimating the causal effect of treatment on survival from HIV - A sequential Cox approach.
• Vorland, lars; Bovim, Gunnar; Gran, Jon Michael; Grødeland, Gunnveig; Hjort, Ingrid & Kristoffersen, Kathrine [Show all 11 contributors for this article] (2021). EKSPERTUTVALGET OM VIRUSVEKTORVAKSINER - Vurderinger av virusvektorvaksiner i og utenfor vaksinasjonsprogrammet. Regjeringen.no.
• Hoff, Rune & Gran, Jon Michael (2018). Causal inference in event history analysis with complex longitudinal data. Universitetet i Oslo Institutt for klinisk medisin; Universitetet i Oslo Det medisinske fakultet. ISSN 9788283772982.

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