Jon Michael Gran

  • Researcher (Statistician), Professor; PhD
  • +47 22 85 14 54

Publications 2024

Gran JM, Stensrud MJ (2024)
[Dependent censoring]
Tidsskr Nor Laegeforen, 144 (1)
DOI 10.4045/tidsskr.23.0685, PubMed 38258729

Merkus SL, Hoff R, Hasting RL, Undem K, Robroek SJW, Gran JM, Mehlum IS (2024)
Gender and educational differences in work participation and working years lost in Norway
Scand J Work Environ Health (in press)
DOI 10.5271/sjweh.4166, PubMed 38785113

Sundbakk LM, Wood M, Gran JM, Nordeng H (2024)
Prenatal exposure to benzodiazepine and z-hypnotics and fifth-grade scholastic skills - emulating target trials using data from the Norwegian Mother, Father and Child Cohort Study
Am J Epidemiol (in press)
DOI 10.1093/aje/kwae159, PubMed 38944758

Sødal HF, Nordseth T, Rasmussen AJO, Rosseland LA, Stenehjem JS, Gran JM, Helseth E, Taubøll E (2024)
Risk of epilepsy after traumatic brain injury: a nationwide Norwegian matched cohort study
Front Neurol, 15, 1411692
DOI 10.3389/fneur.2024.1411692, PubMed 38903174

Publications 2023

Hasting RL, Mehlum IS, Undem K, Robroek SJW, Burdorf A, Gran JM, Merkus SL (2023)
The effects of a national, voluntary agreement for a more inclusive working life on work participation following long-term sickness absence: a Norwegian cohort study
Scand J Work Environ Health, 49 (7), 466-476
DOI 10.5271/sjweh.4112, PubMed 37548319

Keogh RH, Gran JM, Seaman SR, Davies G, Vansteelandt S (2023)
Causal inference in survival analysis using longitudinal observational data: Sequential trials and marginal structural models
Stat Med, 42 (13), 2191-2225
DOI 10.1002/sim.9718, PubMed 37086186

Methi F, Gran JM, Valberg M, Kinge JM, Telle K, Magnusson K (2023)
Third dose mRNA vaccination against SARS-CoV-2 reduces medical complaints seen in primary care: a matched cohort study
BMC Med, 21 (1), 157
DOI 10.1186/s12916-023-02870-2, PubMed 37101263

Thorsen L, Courneya KS, Steene-Johannessen J, Gran JM, Haugnes HS, Negaard HFS, Kiserud CE, Fosså SD (2023)
Association of physical activity with overall mortality among long-term testicular cancer survivors: A longitudinal study
Int J Cancer, 153 (8), 1512-1519
DOI 10.1002/ijc.34625, PubMed 37334652

Publications 2022

Bowe S, Mitlid-Mork B, Gran JM, Distante S, Redman CWG, Staff AC, Georgieva A, Sugulle M (2022)
Predelivery placenta-associated biomarkers and computerized intrapartum fetal heart rate patterns
AJOG Glob Rep, 3 (1), 100149
DOI 10.1016/j.xagr.2022.100149, PubMed 36647548

Gran JM, Stensrud MJ (2022)
[What is life expectancy?]
Tidsskr Nor Laegeforen, 142 (3)
DOI 10.4045/tidsskr.21.0828, PubMed 35170920

Gran JM, Stensrud MJ (2022)
[Different types of interference in randomised trials]
Tidsskr Nor Laegeforen, 142 (9)
DOI 10.4045/tidsskr.22.0059, PubMed 35699544

Hasting RL, Merkus SL, Hanvold TN, Kristensen P, Gran JM, Mehlum IS (2022)
Impact of the Norwegian Agreement for a More Inclusive Working Life on diagnosis-specific sickness absence in young adults: a difference-in-difference analysis
BMC Public Health, 22 (1), 235
DOI 10.1186/s12889-022-12636-9, PubMed 35120464

Hasvik E, Gran JM, Haugen AJ, Grøvle L (2022)
Strategies to manage auxiliary pain medications in chronic pain trials: a topical review
Eur J Clin Pharmacol, 78 (9), 1377-1384
DOI 10.1007/s00228-022-03355-6, PubMed 35842457

Hoff R, Maltzahn N, Hasting RL, Merkus SL, Undem K, Kristensen P, Mehlum IS, Gran JM (2022)
An initiative for a more inclusive working life and its effect on return-to-work after sickness absence: a multistate longitudinal cohort study
BMJ Open, 12 (11), e062558
DOI 10.1136/bmjopen-2022-062558, PubMed 36414299

Lopez-Doriga Ruiz P, Gunnes N, Michael Gran J, Karlstad Ø, Selmer R, Dahl J, Bøås H, Aubrey White R, Christine Hofman A, Hessevik Paulsen T, Viksmoen Watle S, Hylen Ranhoff A, Bukholm G, Løvdal Gulseth H, Tapia G (2022)
Short-term safety of COVID-19 mRNA vaccines with respect to all-cause mortality in the older population in Norway
Vaccine, 41 (2), 323-332
DOI 10.1016/j.vaccine.2022.10.085, PubMed 36376216

Sundbakk LM, Gran JM, Wood ME, Handal M, Skurtveit S, Nordeng H (2022)
Association of Prenatal Exposure to Benzodiazepines and Z-Hypnotics With Risk of Attention-Deficit/Hyperactivity Disorder in Childhood
JAMA Netw Open, 5 (12), e2246889
DOI 10.1001/jamanetworkopen.2022.46889, PubMed 36520439

Uleberg O, Kristiansen T, Nordseth T, Stenehjem JS, Gran JM, Clausen T, Røise O, Rosseland LA (2022)
Injuries after violence and accidents - the forgotten pandemic?
Tidsskr Nor Laegeforen, 142 (8)
DOI 10.4045/tidsskr.22.0261, PubMed 35635423

Undem K, Leinonen T, Kristensen P, Merkus SL, Hasting RL, Gran JM, Mehlum IS (2022)
Gender Differences in Associations between Biomechanical and Psychosocial Work Exposures and Age of Withdrawal from Paid Employment among Older Workers
Int J Environ Res Public Health, 19 (17)
DOI 10.3390/ijerph191710563, PubMed 36078277

Valberg M, Gran JM, Rueegg CS, LeBlanc M (2022)
Letter to the editor regarding "Covid-19 transmission in fitness centers in Norway - a randomized trial"
BMC Public Health, 22 (1), 2433
DOI 10.1186/s12889-022-14800-7, PubMed 36575451

Publications 2021

Bowe S, Mitlid-Mork B, Georgieva A, Gran JM, Redman CWG, Staff AC, Sugulle M (2021)
The association between placenta-associated circulating biomarkers and composite adverse delivery outcome of a likely placental cause in healthy post-date pregnancies
Acta Obstet Gynecol Scand, 100 (10), 1893-1901
DOI 10.1111/aogs.14223, PubMed 34212381

Gran JM, Stensrud MJ (2021)
[Measurement experiments]
Tidsskr Nor Laegeforen, 141 (5)
DOI 10.4045/tidsskr.20.0839, PubMed 33754665

Gran JM, Stensrud MJ (2021)
Goal Attempts
Tidsskr. Nor. Laegeforen., 141 (5), 466

Juhl CB, Holst R, Mundbjerg LH, Stolberg C, Gran JM, Thomsen GF (2021)
Effect of bariatric surgery on employment status-a 7 years controlled nationwide registry study
BMJ Open, 11 (6), e042845
DOI 10.1136/bmjopen-2020-042845, PubMed 34158292

Keogh RH, Seaman SR, Gran JM, Vansteelandt S (2021)
Simulating longitudinal data from marginal structural models using the additive hazard model
Biom J, 63 (7), 1526-1541
DOI 10.1002/bimj.202000040, PubMed 33983641

Maltzahn N, Hoff R, Aalen OO, Mehlum IS, Putter H, Gran JM (2021)
A hybrid landmark Aalen-Johansen estimator for transition probabilities in partially non-Markov multi-state models
Lifetime Data Anal, 27 (4), 737-760
DOI 10.1007/s10985-021-09534-4, PubMed 34595580

Stenehjem JS, Røise O, Nordseth T, Clausen T, Natvig B, O Skurtveit S, Eken T, Kristiansen T, Gran JM, Rosseland LA (2021)
Injury Prevention and long-term Outcomes following Trauma-the IPOT project: a protocol for prospective nationwide registry-based studies in Norway
BMJ Open, 11 (5), e046954
DOI 10.1136/bmjopen-2020-046954, PubMed 34006552

Torp HA, Skurtveit S, Skaga NO, Gustavsen I, Gran JM, Rosseland LA (2021)
Pre-injury dispensing of psychoactive prescription drugs in a ten years trauma population: a retrospective registry analysis
Scand J Trauma Resusc Emerg Med, 29 (1), 125
DOI 10.1186/s13049-021-00939-6, PubMed 34454541

Publications 2020

Bjelland EK, Gran JM, Hofvind S, Eskild A (2020)
The association of birthweight with age at natural menopause: a population study of women in Norway
Int J Epidemiol, 49 (2), 528-536
DOI 10.1093/ije/dyz207, PubMed 31633179

Gottschalk MS, Eskild A, Hofvind S, Gran JM, Bjelland EK (2020)
Temporal trends in age at menarche and age at menopause: a population study of 312 656 women in Norway
Hum Reprod, 35 (2), 464-471
DOI 10.1093/humrep/dez288, PubMed 31990353

Gottschalk MS, Eskild A, Hofvind S, Gran JM, Bjelland EK (2020)
Reply: Menarche age, menopausal age and cumulative exposure to endogenous estrogens
Hum Reprod, 35 (11), 2632
DOI 10.1093/humrep/deaa276, PubMed 33047133

Gran JM, Stensrud MJ (2020)
[Randomisation of infection control measures]
Tidsskr Nor Laegeforen, 140 (16)
DOI 10.4045/tidsskr.20.0834, PubMed 33172246

Gran JM, Stensrud MJ (2020)
Randomization of infection control measures
Tidsskr. Nor. Laegeforen., 140 (16), 1612

Gunnes N, Gjessing HK, Bakken IJ, Ghaderi S, Gran JM, Hungnes O, Magnus P, Samuelsen SO, Skrondal A, Stoltenberg C, Trogstad L, Wilcox AJ, Håberg SE (2020)
Seasonal and pandemic influenza during pregnancy and risk of fetal death: A Norwegian registry-based cohort study
Eur J Epidemiol, 35 (4), 371-379
DOI 10.1007/s10654-020-00600-z, PubMed 31950373

Mitlid-Mork B, Bowe S, Gran JM, Bolstad N, Berg JP, Redman CW, Staff AC, Sugulle M (2020)
Maternal placental growth factor and soluble fms-like tyrosine kinase-1 reference ranges in post-term pregnancies: A prospective observational study
PLoS One, 15 (10), e0240473
DOI 10.1371/journal.pone.0240473, PubMed 33079955

Stensrud MJ, Gran JM (2020)
[Randomisation during a pandemic]
Tidsskr Nor Laegeforen, 140 (10)
DOI 10.4045/tidsskr.20.0439, PubMed 32602317

Stensrud MJ, Gran JM (2020)
Randomization during a pandemic
Tidsskr. Nor. Laegeforen., 140 (10), 1042

Öjlert ÅK, Nebdal D, Lund-Iversen M, Åstrøm Ellefsen R, Brustugun OT, Gran JM, Halvorsen AR, Helland Å (2020)
Immune checkpoint blockade in the treatment of advanced non-small cell lung cancer - predictors of response and impact of previous radiotherapy
Acta Oncol, 60 (2), 149-156
DOI 10.1080/0284186X.2020.1854851, PubMed 33356733

Publications 2019

Djordjilović V, Page CM, Gran JM, Nøst TH, Sandanger TM, Veierød MB, Thoresen M (2019)
Global test for high-dimensional mediation: Testing groups of potential mediators
Stat Med, 38 (18), 3346-3360
DOI 10.1002/sim.8199, PubMed 31074092

Hoff R, Putter H, Mehlum IS, Gran JM (2019)
Landmark estimation of transition probabilities in non-Markov multi-state models with covariates
Lifetime Data Anal, 25 (4), 660-680
DOI 10.1007/s10985-019-09474-0, PubMed 30997582

Kvakkestad KM, Gran JM, Eritsland J, Holst Hansen C, Fossum E, Andersen GØ, Halvorsen S (2019)
Long-Term Survival after Invasive or Conservative Strategy in Elderly Patients with non-ST-Elevation Myocardial Infarction: A Prospective Cohort Study
Cardiology, 144 (3-4), 79-89
DOI 10.1159/000503442, PubMed 31689705

Ofstad AP, Sommer C, Birkeland KI, Bjørgaas MR, Gran JM, Gulseth HL, Johansen OE (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
Int J Obes (Lond), 43 (5), 1082-1092
DOI 10.1038/s41366-019-0353-9, PubMed 30926954

Sundbakk LM, Wood M, Gran JM, Nordeng H (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, 14 (6), e0217830
DOI 10.1371/journal.pone.0217830, PubMed 31170221

Publications 2018

Dieset I, Mørch RH, Hope S, Hoseth EZ, Reponen EJ, Gran JM, Aas M, Michelsen AE, Reichborn-Kjennerud T, Nesvåg R, Agartz I, Melle I, Aukrust P, Djurovic S, Ueland T, Andreassen OA (2018)
An association between YKL-40 and type 2 diabetes in psychotic disorders
Acta Psychiatr Scand, 139 (1), 37-45
DOI 10.1111/acps.12971, PubMed 30328100

Gran JM, Hoff R, Roysland K, Ledergerber B, Young J, Aalen OO (2018)
Estimating the treatment effect on the treated under time-dependent confounding in an application to the Swiss HIV Cohort Study
J. R. Stat. Soc. Ser. C-Appl. Stat., 67 (1), 103-125
DOI 10.1111/rssc.12221

Gran JM, Aalen OO (2018)
Letter to the Editor: Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies (SMMR, Vol. 27, Issue 6, 2018)
Stat Methods Med Res, 28 (1), 321-322
DOI 10.1177/0962280218811177, PubMed 30392452

Hoff R, Corbett K, Mehlum IS, Mohn FA, Kristensen P, Hanvold TN, Gran JM (2018)
The impact of completing upper secondary education - a multi-state model for work, education and health in young men
BMC Public Health, 18 (1), 556
DOI 10.1186/s12889-018-5420-y, PubMed 29699532

Shetelig C, Limalanathan S, Hoffmann P, Seljeflot I, Gran JM, Eritsland J, Andersen GØ (2018)
Association of IL-8 With Infarct Size and Clinical Outcomes in Patients With STEMI
J Am Coll Cardiol, 72 (2), 187-198
DOI 10.1016/j.jacc.2018.04.053, PubMed 29976293

Svendsen K, Telle-Hansen VH, Mørch-Reiersen LT, Garstad KW, Thyholt K, Granlund L, Henriksen HB, Gran JM, Jacobs DR, Retterstøl K (2018)
A randomized controlled trial in Norwegian pharmacies on effects of risk alert and advice in people with elevated cardiovascular risk
Prev Med Rep, 12, 79-86
DOI 10.1016/j.pmedr.2018.08.004, PubMed 30191097

Aalen OO, Roysland K, Gran JM, Stensrud MJ, Strohmaier S (2018)
Feedback and Mediation in Causal Inference Illustrated by Stochastic Process Models
Scand. J. Stat., 45 (1), 62-86
DOI 10.1111/sjos.12286

Publications 2017

Astrup GL, Rustøen T, Hofsø K, Gran JM, Bjordal K (2017)
Symptom burden and patient characteristics: Association with quality of life in patients with head and neck cancer undergoing radiotherapy
Head Neck, 39 (10), 2114-2126
DOI 10.1002/hed.24875, PubMed 28766791

Belay DB, Kifle YG, Goshu AT, Gran JM, Yewhalaw D, Duchateau L, Frigessi A (2017)
Joint Bayesian modeling of time to malaria and mosquito abundance in Ethiopia
BMC Infect Dis, 17 (1), 415
DOI 10.1186/s12879-017-2496-4, PubMed 28606100

Iuliano AD, Roguski KM, Chang HH, Muscatello DJ, Palekar R, Tempia S, Cohen C, Gran JM, Schanzer D, Cowling BJ, Wu P, Kyncl J, Ang LW, Park M, Redlberger-Fritz M, Yu H, Espenhain L, Krishnan A, Emukule G, van Asten L, Pereira da Silva S, Aungkulanon S, Buchholz U, Widdowson MA, Bresee JS et al. (2017)
Estimates of global seasonal influenza-associated respiratory mortality: a modelling study
Lancet, 391 (10127), 1285-1300
DOI 10.1016/S0140-6736(17)33293-2, PubMed 29248255

Shetelig C, Limalanathan S, Eritsland J, Hoffmann P, Seljeflot I, Gran JM, Aukrust P, Ueland T, Andersen GØ (2017)
Osteoprotegerin levels in ST-elevation myocardial infarction: Temporal profile and association with myocardial injury and left ventricular function
PLoS One, 12 (3), e0173034
DOI 10.1371/journal.pone.0173034, PubMed 28253327

Publications 2016

Prague M, Commenges D, Gran JM, Ledergerber B, Young J, Furrer H, Thiébaut R (2016)
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, 73 (1), 294-304
DOI 10.1111/biom.12564, PubMed 27461460

Torvik K, Narverud I, Ottestad I, Svilaas A, Gran JM, Retterstøl K, Ellingvåg A, Strøm E, Ose L, Veierød MB, Holven KB (2016)
Dietary counseling is associated with an improved lipid profile in children with familial hypercholesterolemia
Atherosclerosis, 252, 21-27
DOI 10.1016/j.atherosclerosis.2016.07.913, PubMed 27494447

Publications 2015

Corbett K, Gran JM, Kristensen P, Mehlum IS (2015)
Adult social position and sick leave: the mediating effect of physical workload
Scand J Work Environ Health, 41 (6), 542-53
DOI 10.5271/sjweh.3525, PubMed 26416156

Gran JM (2015)
Survival analysis in medicine and genetics
Tidsskr. Nor. Laegeforen., 135 (4), 357
DOI 10.4045/tidsskr.14.1381

Gran JM, Lie SA, Øyeflaten I, Borgan Ø, Aalen OO (2015)
Causal inference in multi-state models-sickness absence and work for 1145 participants after work rehabilitation
BMC Public Health, 15, 1082
DOI 10.1186/s12889-015-2408-8, PubMed 26498223

Narverud I, van Lennep JR, Christensen JJ, Versmissen J, Gran JM, Iversen PO, Aukrust P, Halvorsen B, Ueland T, Ulven SM, Ose L, Veierød MB, Sijbrands E, Retterstøl K, Holven KB (2015)
Maternal inheritance does not predict cholesterol levels in children with familial hypercholesterolemia
Atherosclerosis, 243 (1), 155-60
DOI 10.1016/j.atherosclerosis.2015.09.014, PubMed 26386212

Publications 2014

Hoff R, Gran JM, Farewell D (2014)
Farewell's Linear Increments Model for Missing Data: The FLIM Package
R Journal, 6 (2), 137-150

Røislien J, Clausen T, Gran JM, Bukten A (2014)
Accounting for individual differences and timing of events: estimating the effect of treatment on criminal convictions in heroin users
BMC Med Res Methodol, 14, 68
DOI 10.1186/1471-2288-14-68, PubMed 24886472

Skjeldestad FE, Bjørnholt JV, Gran JM, Erisken HM (2014)
The effect of antibiotic prophylaxis guidelines on surgical-site infections associated with cesarean delivery
Int J Gynaecol Obstet, 128 (2), 126-30
DOI 10.1016/j.ijgo.2014.08.018, PubMed 25456970

Aalen OO, Røysland K, Gran JM, Kouyos R, Lange T (2014)
Can we believe the DAGs? A comment on the relationship between causal DAGs and mechanisms
Stat Methods Med Res, 25 (5), 2294-2314
DOI 10.1177/0962280213520436, PubMed 24463886

Publications 2013

Gran JM, Kacelnik O, Grjibovski AM, Aavitsland P, Iversen BG (2013)
Counting pandemic deaths: comparing reported numbers of deaths from influenza A(H1N1)pdm09 with estimated excess mortality
Influenza Other Respir Viruses, 7 (6), 1370-9
DOI 10.1111/irv.12125, PubMed 23745605

Publications 2012

de Blasio BF, Xue Y, Iversen B, Gran JM (2012)
Estimating influenza-related sick leave in Norway: was work absenteeism higher during the 2009 A(H1N1) pandemic compared to seasonal epidemics?
Euro Surveill, 17 (33)
PubMed 22913978

de Blasio BF, Xue Y, Iversen B, Gran JM (2012)
Estimating influenza-related sick leave in Norway: Was work absenteeism higher during the 2009 A(H1N1) pandemic compared to seasonal epidemics?
Eurosurveillance, 17 (33), 20246-25

Aalen OO, Røysland K, Gran JM, Ledergerber B (2012)
Causality, mediation and time: a dynamic viewpoint
J R Stat Soc Ser A Stat Soc, 175 (4), 831-861
DOI 10.1111/j.1467-985X.2011.01030.x, PubMed 23193356

Publications 2011

Bentsen H, Solberg DK, Refsum H, Gran JM, Bøhmer T, Torjesen PA, Halvorsen O, Lingjærde O (2011)
Bimodal distribution of polyunsaturated fatty acids in schizophrenia suggests two endophenotypes of the disorder
Biol Psychiatry, 70 (1), 97-105
DOI 10.1016/j.biopsych.2011.02.011, PubMed 21546001

Carlsen MH, Karlsen A, Lillegaard IT, Gran JM, Drevon CA, Blomhoff R, Andersen LF (2011)
Relative validity of fruit and vegetable intake estimated from an FFQ, using carotenoid and flavonoid biomarkers and the method of triads
Br J Nutr, 105 (10), 1530-8
DOI 10.1017/S0007114510005246, PubMed 21272408

Reikvam DH, Perminow G, Lyckander LG, Gran JM, Brandtzaeg P, Vatn M, Carlsen HS (2011)
Increase of regulatory T cells in ileal mucosa of untreated pediatric Crohn's disease patients
Scand J Gastroenterol, 46 (5), 550-60
DOI 10.3109/00365521.2011.551887, PubMed 21281255

Røysland K, Gran JM, Ledergerber B, von Wyl V, Young J, Aalen OO (2011)
Analyzing direct and indirect effects of treatment using dynamic path analysis applied to data from the Swiss HIV Cohort Study
Stat Med, 30 (24), 2947-58
DOI 10.1002/sim.4324, PubMed 21800346

Publications 2010

Gran JM, Iversen B, Hungnes O, Aalen OO (2010)
Estimating influenza-related excess mortality and reproduction numbers for seasonal influenza in Norway, 1975-2004
Epidemiol Infect, 138 (11), 1559-68
DOI 10.1017/S0950268810000671, PubMed 20334732

Gran JM, Røysland K, Wolbers M, Didelez V, Sterne JA, Ledergerber B, Furrer H, von Wyl V, Aalen OO (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
Stat Med, 29 (26), 2757-68
DOI 10.1002/sim.4048, PubMed 20803557

Publications 2008

Gran JM, Wasmuth L, Amundsen EJ, Lindqvist BH, Aalen OO (2008)
Growth rates in epidemic models: application to a model for HIV/AIDS progression
Stat Med, 27 (23), 4817-34
DOI 10.1002/sim.3219, PubMed 18288789

Haugaa KH, Edvardsen T, Leren TP, Gran JM, Smiseth OA, Amlie JP (2008)
Left ventricular mechanical dispersion by tissue Doppler imaging: a novel approach for identifying high-risk individuals with long QT syndrome
Eur Heart J, 30 (3), 330-7
DOI 10.1093/eurheartj/ehn466, PubMed 18940888

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