• Cancer related mortality in multiple sclerosis. A population based cohort study 

      Grytten, Nina; Myhr, Kjell-Morten; Celius, Elisabeth Gulowsen; Benjaminsen, Espen; Midgard, Rune; Vatne, Anita; Aarseth, Jan Harald; Mannseth, Janne; Torkildsen, Øivind Fredvik Grytten (Peer reviewed; Journal article, 2022)
      Background Cancer is a major cause of death, but how cancer influences mortality risk in Multiple Sclerosis (MS) is unclear. Objectives Determine all-cause mortality and mortality following a cancer diagnosis among MS ...
    • Incidence of cancer in multiple sclerosis before and after the treatment era– a registry- based cohort study 

      Grytten, Nina; Myhr, Kjell-Morten; Celius, Elisabeth Gulowsen; Benjaminsen, Espen; Kampman, Margitta T.; Midgard, Rune; Vatne, Anita; Aarseth, Jan H.; Riise, Trond; Torkildsen, Øivind (Journal article; Peer reviewed, 2021)
    • Increasing age of multiple sclerosis onset from 1920 to 2022: a population-based study 

      Habbestad, Andrea Kyvik; Willumsen, Johannes Sverre; Aarseth, Jan Harald; Grytten, Nina; Midgard, Rune; Wergeland, Stig; Myhr, Kjell-Morten; Torkildsen, Øivind (Journal article; Peer reviewed, 2023)
      Objective To study the age at onset of relapsing–remitting multiple sclerosis (RRMS) during the past century. Methods This is a population-based cohort study of persons diagnosed with RRMS in Hordaland, Møre, and ...
    • Level of education and multiple sclerosis risk over a 50-year period: Registry-based sibling study 

      Bjørnevik, Kjetil; Riise, Trond; Benjaminsen, Espen; Celius, Elisabeth Gulowsen; Dahl, Ole-Petter; Kampman, Margitta Theodora; Løken-Amsrud, Kristin Ingeleiv; Midgard, Rune; Myhr, Kjell-Morten; Torkildsen, Øivind; Vatne, Anita; Grytten, Nina (Journal article; Peer reviewed, 2016)
      Background: The conflicting results from studies on socioeconomic status (SES) and multiple sclerosis (MS) risk might be due to a change in the distribution of environmental exposures over time or to methodological ...
    • Mortality and cause of death in multiple sclerosis in western Norway 1950-2021: A registry-based linkage study 

      Willumsen, Johannes Sverre; Grytten, Nina; Aarseth, Jan Harald; Myklebust, Tor Åge; Myhr, Kjell-Morten; Midgard, Rune (Peer reviewed; Journal article, 2022)
      Background Persons with multiple sclerosis (pwMS) have higher risk of mortality compared with the general population. Longitudinal studies are important for understanding the evolution of survival in pwMS. Objective ...
    • Risk of cancer among multiple sclerosis patients, siblings, and population controls: A prospective cohort study 

      Grytten, Nina; Myhr, Kjell-Morten; Celius, Elisabeth Gulowsen; Benjaminsen, Espen; Kampman, Margitta Theodora; Midgard, Rune; Vatne, Anita; Aarseth, Jan Harald; Riise, Trond; Torkildsen, Øivind (Journal article; Peer reviewed, 2019)
      Background: Risk of cancer in multiple sclerosis (MS) patients compared to their siblings is unknown. Objective: The objective was to prospectively investigate the risk of cancer among MS patients compared to siblings ...