Publications 2022

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

Sahakyan MA, Aghayan DL, Edwin B, Alikhanov R, Britskaia N, Brudvik KW, D'Hondt M, De Meyere C, Efanov M, Fretland ÅA, Hoff R, Ismail W, Ivanecz A, Kazaryan AM, Lassen K, Magdalenić T, Parmentier I, Røsok BI, Villanger O, Yaqub S (2022)
Laparoscopic versus open liver resection for intrahepatic cholangiocarcinoma: a multicenter propensity score-matched study
Scand J Gastroenterol, 1-8 (in press)
DOI 10.1080/00365521.2022.2143724, PubMed 36373379

Publications 2021

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

Publications 2020

Kristensen P, Hanvold TN, Hasting RL, Merkus SL, Hoff R, Mehlum IS (2020)
Work participation in young Norwegians: a 19-year follow up in a registry-based life-course cohort
Scand J Public Health, 49 (2), 176-187
DOI 10.1177/1403494820917507, PubMed 32449464

Publications 2019

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

Publications 2018

Degerud E, Nygård O, de Vogel S, Hoff R, Svingen GFT, Pedersen ER, Nilsen DWT, Nordrehaug JE, Midttun Ø, Ueland PM, Dierkes J (2018)
Plasma 25-Hydroxyvitamin D and Mortality in Patients With Suspected Stable Angina Pectoris
J Clin Endocrinol Metab, 103 (3), 1161-1170
DOI 10.1210/jc.2017-02328, PubMed 29325121

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

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

Publications 2015

Degerud E, Hoff R, Nygård O, Strand E, Nilsen DW, Nordrehaug JE, Midttun Ø, Ueland PM, de Vogel S, Dierkes J (2015)
Cosinor modelling of seasonal variation in 25-hydroxyvitamin D concentrations in cardiovascular patients in Norway
Eur J Clin Nutr, 70 (4), 517-22
DOI 10.1038/ejcn.2015.200, PubMed 26603883

Strohmaier S, Røysland K, Hoff R, Borgan Ø, Pedersen TR, Aalen OO (2015)
Dynamic path analysis - a useful tool to investigate mediation processes in clinical survival trials
Stat Med, 34 (29), 3866-87
DOI 10.1002/sim.6598, PubMed 26278111

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