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Showing results 1-44 of 44
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2023
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1. |
Berg, Erlend; Tegn, Nicolai Kloumann; Abdelnoor, Michael; Røysland, Kjetil; Ryalen, Pål Christie; Aaberge, Lars; Eek, Christian; Øie, Erik Harald; Juliebø, Vibeke; Gjertsen, Erik; Ranhoff, Anette Hylen; Gullestad, Lars; Nordstrand, Njord; Bendz, Bjørn. Long-Term Outcomes of Invasive vs Conservative Strategies for Older Patients With Non–ST-Segment Elevation Acute Coronary Syndromes. Journal of the American College of Cardiology 2023 ;Volume 82.(21) p. 2021-2030 UiO OUS DIAKON AHUS VV UiB
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2022
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2. |
Tsarpali, Vasiliki; Midtvedt, Karsten; Lønning, Kjersti; Bernklev, Tomm; Åsberg, Anders; Fawad, Haris; Lippe, Nanna von der; Reisæter, Anna Varberg; Røysland, Kjetil; Heldal, Kristian. A Comorbidity Index and Pretransplant Physical Status Predict Survival in Older Kidney Transplant Recipients: A National Prospective Study. Transplantation direct 2022 ;Volume 8.(4) p. e1307- STHF SIV UiO OUS
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2021
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3. |
Andersson, Helene; Jablonski, Greg Eigner; Nordahl, Stein Helge Glad; Nordfalk, Karl; Helseth, Eirik; Martens, Camilla; Røysland, Kjetil; Goplen, Frederik Kragerud. The Risk of Benign Paroxysmal Positional Vertigo After Head Trauma. The Laryngoscope 2021 ;Volume 132.(2) p. 443-448 UiO OUS UiB HAUKELAND
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Ryalen, Pål Christie; Møller, Bjørn; Laache, Christoffer Haug; Stensrud, Mats Julius; Røysland, Kjetil. Prognosis of cancer survivors: estimation based on differential equations. Biostatistics 2021 ;Volume 24.(2) p. 345-357 KREFTREG UiO
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2020
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5. |
Ryalen, Pål Christie; Stensrud, Mats Julius; Fosså, Sophie Dorothea; Røysland, Kjetil. Causal inference in continuous time: an example on prostate cancer therapy. Biostatistics 2020 ;Volume 21.(1) p. 172-185 UiO OUS DIAKON KREFTREG
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2019
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6. |
Aalen, Odd O.; Stensrud, Mats Julius; Didelez, Vanessa; Daniel, Rhian; Røysland, Kjetil; Strohmaier, Susanne. Time-dependent mediators in survival analysis: Modeling direct and indirect effects with the additive hazards model. Biometrical Journal 2019 p. 1-18 UiO DIAKON
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7. |
Hausken, John; Fretland, Åsmund Avdem; Edwin, Bjørn; Andersen, Marit Helen; Dagenborg, Vegar Johansen; Bjørnelv, Gudrun Maria Waaler; Kristiansen, Ronny; Røysland, Kjetil; Kvarstein, Gunnvald; Tønnessen, Tor Inge. Intravenous patient-controlled analgesia versus thoracic epidural analgesia after open liver surgery: a prospective, randomized, controlled noninferiority trial. Annals of Surgery 2019 ;Volume 270.(2) p. 193-199 UiO UiT OUS
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8. |
Latysheva, Anna; Emblem, Kyrre Eeg; Brandal, Petter; Vik-Mo, Einar O.; Pahnke, Jens; Røysland, Kjetil; Hald, John K; Server, Andrés. Dynamic susceptibility contrast and diffusion MR imaging identify oligodendroglioma as defined by the 2016 WHO classification for brain tumors: histogram analysis approach. Neuroradiology 2019 ;Volume 61.(5) p. 545-555 OUS UiO
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9. |
Ryalen, Pål Christie; Stensrud, Mats Julius; Røysland, Kjetil. The additive hazard estimator is consistent for continuous-time marginal structural models. Lifetime Data Analysis 2019 ;Volume 25.(4) p. 611-638 UiO
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10. |
Stensrud, Mats Julius; Ryalen, Pål Christie; Røysland, Kjetil. Sufficient Cause Interaction for Time-to-event Outcomes. Epidemiology 2019 ;Volume 30.(2) p. 189-196 UiO DIAKON
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11. |
Stensrud, Mats Julius; Røysland, Kjetil; Ryalen, Pål Christie. On null hypotheses in survival analysis. Biometrics 2019 ;Volume 75.(4) p. 1276-1287 UiO
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2018
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12. |
Aalen, Odd O.; Gran, Jon Michael; Røysland, Kjetil; Stensrud, Mats Julius; Strohmaier, Susanne. Feedback and Mediation in Causal Inference Illustrated by Stochastic Process Models. Scandinavian Journal of Statistics 2018 ;Volume 45.(1) p. 62-86 UiO DIAKON OUS
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13. |
Fretland, Åsmund Avdem; Hausken, Jon; Edwin, B; Andersen, Marit Helen; Dagenborg, Vegar Johansen; Kristiansen, Ronny; Røysland, Kjetil; Kvarstein, Gunnvald; Tønnessen, Tor-Inge. Does ketorolac have an opioid sparing effect after open liver resection? Data from the Oslo-COMET trial. HPB2018, 20 (S2); 2018-02-01 UiO
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14. |
Ryalen, Pål Christie; Stensrud, Mats Julius; Røysland, Kjetil. Transforming cumulative hazard estimates. Biometrika 2018 ;Volume 105.(4) p. 905-916 UiO
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2017
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15. |
Frank, Anna-Simone Josefine; Lupattelli, Angela; Røysland, Kjetil; Nordeng, Hedvig Marie Egeland. Patterns and Predictors of Hypothyroid Medication Use in Relation to Pregnancy: A Drug Utilization Study. 33th International Conference on Pharmacoepidemiology & Therapeutic Risk Management; 2017-08-26 - 2017-08-30 UiO
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16. |
Frank, Anna-Simone Josefine; Lupattelli, Angela; Røysland, Kjetil; Nordeng, Hedvig Marie Egeland. PATTERNS AND PREDICTORS OF HYPOTHYROID MEDICATION USE IN RELATION TO PREGNANCY: A DRUG UTILIZATION STUDY. NFIF Conference 2017; 2017-06-19 - 2017-06-21 UiO
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17. |
Frank, Anna-Simone Josefine; Lupattelli, Angela; Røysland, Kjetil; Nordeng, Hedvig Marie Egeland. Risk factors for discontinuation of hypothyroid medication in early pregnancy -- a study from the Norwegian Mother and Child Cohort Study and the Medical Birth Registry of Norway. 28th conference of the European Network of Teratology Information Services (ENTIS); 2017-09-02 - 2017-09-05 UiO
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18. |
Gran, Jon Michael; Hoff, Rune; Røysland, Kjetil; Ledergerber, Bruno; Young, James; Aalen, Odd O.. 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) 2017 ;Volume 67.(1) p. 103-125 OUS UiO
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19. |
Stensrud, Mats Julius; Aalen, Odd O.; Valberg, Morten; Røysland, Kjetil. Exploring selection bias by causal frailty models: The magnitude matters. Epidemiology 2017 ;Volume 28.(3) p. 379-386 DIAKON UiO
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2016
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20. |
Aalen, Odd O.; Røysland, Kjetil; Gran, Jon Michael; Kouyos, Roger; Lange, Theis. Can we believe the DAGs? A comment on the relationship between causal DAGs and mechanisms. Statistical Methods in Medical Research 2016 ;Volume 25.(5) p. 2294-2314 UiO
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21. |
Hovdenes, Jan; Røysland, Kjetil; Nielsen, Niklas; Kjærgaard, Jesper; Wanscher, Michael; Hassager, Christian; Wetterslev, Jørn; Cronberg, Tobias; Erlinge, David; Friberg, Hans; Gasche, Yvan; Horn, Janneke; Kuiper, Michael; Pellis, Tommaso; Stammet, Pascal; Wise, Matthew P.; Åneman, Anders; Bugge, Jan F. A low body temperature on arrival at hospital following out-of-hospital-cardiac-arrest is associated with increased mortality in the TTM-study. Resuscitation 2016 ;Volume 107. p. 102-106 OUS UiO
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22. |
Lund-Johansen, Fridtjof; de la Rosa-Carrillo, Daniel; Mehta, Adi; Sikorski, Krzysztof; Inngjerdingen, Marit; Kalina, Tomáลก; Røysland, Kjetil; De Souza, Gustavo Antonio; Bradbury, Andrew R.M.; Lecrevisse, Quentin; Stuchly, Jan. MetaMass, a tool for meta-analysis of subcellular proteomics data. Nature Methods 2016 ;Volume 13.(10) p. 837-840 OUS UiO
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2015
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23. |
Aalen, Odd O.; Cook, Richard J.; Røysland, Kjetil. Does Cox analysis of a randomized survival study yield a causal treatment effect?. Lifetime Data Analysis 2015 ;Volume 21.(4) p. 579-593 UiO
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24. |
Strohmaier, Susanne; Røysland, Kjetil; Hoff, Rune; Borgan, Ørnulf; Pedersen, Terje Rolf; Aalen, Odd O.. Dynamic path analysis - a useful tool to investigate mediation processes in clinical survival trials. Statistics in Medicine 2015 ;Volume 34.(29) p. 3866-3887 UiO OUS
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2014
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25. |
Nygård, Mari; Røysland, Kjetil; Campbell, Suzanne; Dillner, Joakim. Comparative effectiveness study on human papillomavirus detection methods used in the cervical cancer screening programme. BMJ Open 2014 KREFTREG
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2013
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26. |
Sanchez-Niubo, Albert; Aalen, Odd O.; Domingo-Salvany, Antonia; Amundsen, Ellen Johanna; Fortiana, Josep; Røysland, Kjetil. A multi-state model to estimate incidence of heroin use. BMC Medical Research Methodology 2013 ;Volume 13. p. - UiO FHI
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2012
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27. |
Aalen, Odd O.; Røysland, Kjetil; Gran, Jon Michael; Ledergerber, Bruno. Causality, mediation and time: a dynamic viewpoint. Journal of the Royal Statistical Society: Series A (Statistics in Society) 2012 ;Volume 175.(4) p. 831-861 UiO
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28. |
Røysland, Kjetil. COUNTERFACTUAL ANALYSES WITH GRAPHICAL MODELS BASED ON LOCAL INDEPENDENCE. Annals of Statistics 2012 ;Volume 40.(4) p. 2162-2194 UiO
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29. |
Tropé, Ameli Ellen Claesdotter; Sjøborg, Katrine Dønvold; Nygård, Mari; Røysland, Kjetil; Campbell, Suzanne; Alfsen, Glenny Cecilie; Jonassen, Christine M. Cytology and Human Papillomavirus Testing 6 to 12 Months after ASCUS or LSIL Cytology in Organized Screening To Predict High-Grade Cervical Neoplasia between Screening Rounds. Journal of Clinical Microbiology 2012 ;Volume 50.(6) p. 1927-1935 AHUS OSTFSYK KREFTREG
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2011
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30. |
Røysland, Kjetil. A martingale approach to continuous time marginal structural models. Bernoulli 2011 ;Volume 17.(3) p. 895-915 UiO
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31. |
Røysland, Kjetil. Frames generated by actions of countable discrete groups. Transactions of the American Mathematical Society 2011 ;Volume 363.(1) p. 95-108 UiO
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32. |
Røysland, Kjetil; Gran, Jon Michael; Ledergerber, Bruno; von Wyl, Viktor; Young, James A.; Aalen, Odd O.. Analyzing direct and indirect effects of treatment using dynamic path analysis applied to data from the Swiss HIV Cohort Study. Statistics in Medicine 2011 ;Volume 30.(24) p. 2947-2958 UiO
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2010
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33. |
Gjessing, Håkon K.; Røysland, Kjetil; Aalen, Odd O.; Pena, Edsel A. Recurrent events and the exploding Cox model. Lifetime Data Analysis 2010 ;Volume 16.(4) p. 525-546 FHI UiO UiB
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34. |
Gran, Jon Michael; Røysland, Kjetil; Wolbers, Marcel; Didelez, Vanessa; Sterne, Jonathan AC; Ledergerber, Bruno; Furrer, Hansjakob; von Wyl, Viktor; Aalen, Odd O.. 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 2010 ;Volume 29.(26) p. 2757-2768 UiO
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35. |
Røysland, Kjetil. A Marginal Structural Model in Continuous Time. Seminar på matematisk institutt, Universitetet i København; 2010-09-15 UiO
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36. |
Røysland, Kjetil. A marginal structural model in continuous time. 28th European Meeting of Statisticians; 2010-08-17 - 2010-08-22 UiO
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37. |
Røysland, Kjetil. A marginal structural model in continuous time. Institute of Mathematical Statistics 73rd Annual Meeting; 2010-08-09 - 2010-08-13 UiO
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38. |
Røysland, Kjetil. Interventions with identifiable consequences. Oslo graduate school in biostatistics workshop; 2010-10-15 - 2010-10-16 UiO
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2009
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39. |
Røysland, Kjetil. A marginal structural model in continuous time. Causal modelling International Workshop; 2009-09-21 UiO
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40. |
Røysland, Kjetil. Transfer operators and harmonic bundle maps. British-Nordic congress of Mathematicians; 2009-06-08 UiO
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2008
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41. |
Røysland, Kjetil. Symmetries in projective multiresolution analyses. Journal of Fourier Analysis and Applications 2008 ;Volume 14.(2) p. 267-285 UiO
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42. |
Røysland, Kjetil; Dutkay, Dorin. Covariant Representations for Matrix-valued Transfer Operators. Integral equations and operator theory 2008 ;Volume 62.(3) p. 383-410 UiO
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2007
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43. |
Dutkay, Dorin; Røysland, Kjetil. The algebra of harmonic functions for a matrix-valued transfer operator. Journal of Functional Analysis 2007 ;Volume 252.(2) p. 734-762 UiO
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2006
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44. |
Røysland, Kjetil. Transfer operators on bundle maps. 06w5027 Operator Methods in Fractal Analysis, Wavelets and Dynamical Systems - Banff internatinal research centre; 2006-12-02 - 2006-12-02 UiO
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