Kjetil Røysland

Associate Professor - Department of Biostatistics
Image of Kjetil Røysland
Norwegian version of this page
Phone +47-22851015
Room 2232
Visiting address Sognsvannsveien 9 Domus Medica 0372 OSLO
Postal address Postboks 1122 Blindern 0317 OSLO


  • 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), s 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. Journal of the Royal Statistical Society, Series C: Applied Statistics.  ISSN 0035-9254.  67(1), s 103- 125 . doi: 10.1111/rssc.12221
  • Ryalen, Pål Christie; Stensrud, Mats Julius & Røysland, Kjetil (2017). Transforming cumulative hazard estimates. arXiv.org.  ISSN 2331-8422.
  • Stensrud, Mats Julius; Aalen, Odd O.; Valberg, Morten & Røysland, Kjetil (2017). Exploring selection bias by causal frailty models: The magnitude matters. Epidemiology.  ISSN 1044-3983.  28(3), s 379- 386 . doi: 10.1097/EDE.0000000000000621
  • 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), s 2294- 2314 . doi: 10.1177/0962280213520436
  • 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 (2016). A low body temperature on arrival at hospital following out-of-hospital-cardiac-arrest is associated with increased mortality in the TTM-study. Resuscitation.  ISSN 0300-9572.  107, s 102- 106 . doi: 10.1016/j.resuscitation.2016.08.011
  • Lund-Johansen, Fridtjof; de la Rosa-Carrillo, Daniel; Mehta, Adi; Sikorski, Krzysztof; Inngjerdingen, Marit; Kalina, Tomáš; Røysland, Kjetil; De Souza, Gustavo Antonio; Bradbury, Andrew R.M.; Lecrevisse, Quentin & Stuchly, Jan (2016). MetaMass, a tool for meta-analysis of subcellular proteomics data. Nature Methods.  ISSN 1548-7091.  13(10), s 837- 840 . doi: 10.1038/nmeth.3967
  • Aalen, Odd O.; Cook, Richard J. & Røysland, Kjetil (2015). Does Cox analysis of a randomized survival study yield a causal treatment effect?. Lifetime Data Analysis.  ISSN 1380-7870.  21(4), s 579- 593 . doi: 10.1007/s10985-015-9335-y
  • Strohmaier, Susanne; Røysland, Kjetil; Hoff, Rune; Borgan, Ørnulf; Pedersen, Terje Rolf & Aalen, Odd O. (2015). Dynamic path analysis - a useful tool to investigate mediation processes in clinical survival trials. Statistics in Medicine.  ISSN 0277-6715.  34(29), s 3866- 3887 . doi: 10.1002/sim.6598
  • Nygård, Mari; Røysland, Kjetil; Campbell, Suzanne & Dillner, Joakim (2014). Comparative effectiveness study on human papillomavirus detection methods used in the cervical cancer screening programme. BMJ Open.  ISSN 2044-6055. . doi: 10.1136/bmjopen-2013-003460
  • Sanchez-Niubo, Albert; Aalen, Odd O.; Domingo-Salvany, Antonia; Amundsen, Ellen Johanna; Fortiana, Josep & Røysland, Kjetil (2013). A multi-state model to estimate incidence of heroin use. BMC Medical Research Methodology.  ISSN 1471-2288.  13 . doi: 10.1186/1471-2288-13-4 Show summary
  • 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), s 831- 861 . doi: 10.1111/j.1467-985X.2011.01030.x
  • Røysland, Kjetil (2012). COUNTERFACTUAL ANALYSES WITH GRAPHICAL MODELS BASED ON LOCAL INDEPENDENCE. Annals of Statistics.  ISSN 0090-5364.  40(4), s 2162- 2194 . doi: 10.1214/12-AOS1031
  • Tropé, Ameli Ellen Claesdotter; Sjøborg, Katrine Dønvold; Nygård, Mari; Røysland, Kjetil; Campbell, Suzanne; Alfsen, Glenny Cecilie & Jonassen, Christine M (2012). 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.  ISSN 0095-1137.  50(6), s 1927- 1935 . doi: 10.1128/JCM.00265-12
  • Røysland, Kjetil (2011). A martingale approach to continuous time marginal structural models. Bernoulli.  ISSN 1350-7265.  17(3), s 895- 915 . doi: 10.3150/10-BEJ303
  • Røysland, Kjetil (2011). Frames generated by actions of countable discrete groups. Transactions of the American Mathematical Society.  ISSN 0002-9947.  363(1), s 95- 108
  • 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), s 2947- 2958 . doi: 10.1002/sim.4324
  • Gjessing, Håkon K.; Røysland, Kjetil; Aalen, Odd O. & Pena, Edsel A (2010). Recurrent events and the exploding Cox model. Lifetime Data Analysis.  ISSN 1380-7870.  16(4), s 525- 546 . doi: 10.1007/s10985-010-9180-y
  • Gran, Jon Michael; Røysland, Kjetil; Wolbers, Marcel; Didelez, Vanessa; Sterne, Jonathan AC; Ledergerber, Bruno; Furrer, Hansjakob; von Wyl, Viktor & Aalen, Odd O. (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), s 2757- 2768 . doi: 10.1002/sim.4048
  • Røysland, Kjetil (2008). Symmetries in projective multiresolution analyses. Journal of Fourier Analysis and Applications.  ISSN 1069-5869.  14(2), s 267- 285
  • Røysland, Kjetil & Dutkay, Dorin (2008). Covariant Representations for Matrix-valued Transfer Operators. Integral equations and operator theory.  ISSN 0378-620X.  62(3), s 383- 410 . doi: 10.1007/s00020-008-1623-4
  • Dutkay, Dorin & Røysland, Kjetil (2007). The algebra of harmonic functions for a matrix-valued transfer operator. Journal of Functional Analysis.  ISSN 0022-1236.  252(2), s 734- 762 . doi: 10.1016/j.jfa.2007.04.014

View all works in Cristin

  • Røysland, Kjetil (2010). A Marginal Structural Model in Continuous Time.
  • Røysland, Kjetil (2010). A marginal structural model in continuous time.
  • Røysland, Kjetil (2010). A marginal structural model in continuous time.
  • Røysland, Kjetil (2010). Interventions with identifiable consequences.
  • Røysland, Kjetil (2009). A marginal structural model in continuous time.
  • Røysland, Kjetil (2009). Transfer operators and harmonic bundle maps.
  • Røysland, Kjetil (2006). Transfer operators on bundle maps.

View all works in Cristin

Published Jan. 16, 2012 5:02 PM - Last modified Sep. 14, 2017 5:23 PM