• 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)
    • 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 ...
    • Low vitamin D, but not tobacco use or high BMI, is associated with long-term disability progression in multiple sclerosis 

      Wesnes, Kristin; Myhr, Kjell-Morten; Riise, Trond; Stokke, Silje Agnethe; Torkildsen, Øivind; Wergeland, Stig; Holmøy, Trygve; Midgard, Rune; Bru, Alla Nikolajevna S; Edland, Astrid; Eikeland, Randi; Gosal, Sonia; Harbo, Hanne Flinstad; Kleveland, Grethe; Sørenes, Yvonne; Øksendal, Nina; Bjørnevik, Kjetil Lauvland (Peer reviewed; Journal article, 2021)
      Background: Low vitamin D levels, tobacco use and high body mass index (BMI) have been linked to adverse disease outcomes in multiple sclerosis (MS), but their influence on long-term disability progression remains unclear. ...
    • Perinatal Depression and Anxiety in Women with Multiple Sclerosis: A Population-Based Cohort Study 

      Eid, Karine; Torkildsen, Øivind Fredvik Grytten; Aarseth, Jan Harald; Flemmen, Heidi Øyen; Holmøy, Trygve; Lorentzen, Åslaug Rudjord; Myhr, Kjell-Morten; Riise, Trond; Simonsen, Cecilia Smith; Torkildsen, Cecilie Fredvik; Wergeland, Stig; Willumsen, Johannes Sverre; Øksendal, Nina; Gilhus, Nils Erik; Bjørk, Marte-Helene (Journal article; Peer reviewed, 2021)
      Objective: To assess the occurrence of perinatal depression and anxiety in women before and after diagnosis of multiple sclerosis (MS). Methods: 114,629 pregnant women were included in the Norwegian Mother, Father and Child ...
    • 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 ...