Browsing Institutt for medisinske basalfag by Author "Aalen, Odd O."

Now showing items 1-6 of 6

  • A hybrid landmark Aalen-Johansen estimator for transition probabilities in partially non-Markov multi-state models 
    Maltzahn, Niklas; Hoff, Rune; Aalen, Odd O.; Mehlum, Ingrid S.; Putter, Hein; Gran, Jon Michael (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    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 ...
  • A lean additive frailty model: With an application to clustering of melanoma in Norwegian families 
    Brathovde, Mari; Moger, Tron Anders; Aalen, Odd O.; Grotmol, Tom; Veierød, Marit Bragelien; Valberg, Morten (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Additive frailty models are used to model correlated survival data. However, the complexity of the models increases with cluster size to the extent that practical usage becomes increasingly challenging. We present a ...
  • Causal inference in multi-state models–sickness absence and work for 1145 participants after work rehabilitation 
    Gran, Jon Michael; Lie, Stein Atle; Øyeflaten, Irene Larsen; Borgan, Ørnulf; Aalen, Odd O. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Background Multi-state models, as an extension of traditional models in survival analysis, have proved to be a flexible framework for analysing the transitions between various states of sickness absence and work over time. ...
  • Imaging predictors of response to cardiac resynchronization therapy: left ventricular work asymmetry by echocardiography and septal viability by cardiac magnetic resonance 
    Aalen, John; Donal, Erwan; Larsen, Camilla Kjellstad; Duchenne, Jürgen; Lederlin, Mathieu; Cvijic, Marta; Hubert, Arnaud; Voros, Gabor; Leclercq, Christophe; Bogaert, Jan; Hopp, Einar; Fjeld, Jan Gunnar; Penicka, Martin; Linde, Cecilia; Aalen, Odd O.; Kongsgård, Erik; Galli, Elena; Voigt, Jens-Uwe; Smiseth, Otto A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Aims  Left ventricular (LV) failure in left bundle branch block is caused by loss of septal function and compensatory hyperfunction of the LV lateral wall (LW) which stimulates adverse remodelling. This study investigates ...
  • Martingales in Survival Analysis 
    Aalen, Odd O.; Andersen, Per K.; Borgan, Ørnulf; Gill, Richard D.; Keiding, Niels (Chapter / Bokkapittel / AcceptedVersion; Peer reviewed, 2022)
    The paper traces the development of the use of martingale methods in survival analysis from the mid 1970s to the early 1990s. This development was initiated by Aalen’s Berkeley Ph.D.-thesis in 1975, progressed in the late ...
  • The surprising implications of familial association in disease risk 
    Valberg, Morten; Stensrud, Mats Julius; Aalen, Odd O. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Background A wide range of diseases show some degree of clustering in families; family history is therefore an important aspect for clinicians when making risk predictions. Familial aggregation is often ...