Blar i forfatter "Tverdal, Aage"

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    • Cigarette smoking and colorectal cancer mortality among 602,242 Norwegian males and females 

      Parajuli, Ranjan; Bjerkaas, Eivind; Tverdal, Aage; Le Marchand, Loïc; Weiderpass, Elisabete; Gram, Inger Torhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Background: Colorectal cancer (CRC) is one of the main cancer types, with high incidence and mortality in Norway. We examined the association between different measures of smoking exposure and CRC mortality overall and by subsite in a large Norwegian cohort. Methods: We followed 602,242 participants from four Norwegian health surveys, aged 19–67 years at enrollment between 1972 and 2003 by linkage ...

    • Comorbidities in an asthma population 8-29 years old: a study from the Norwegian Prescription Database 

      Karlstad, Øystein; Nafstad, Per; Tverdal, Aage; Skurtveit, Svetlana; Furu, Kari (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-09-23)
      Purpose: To examine occurrence of chronic diseases and antimicrobial treatment in an asthma population 8-29 years old, compared to the general population. Methods: In this cross-sectional study, the asthma population was identified from the general population (retrieved from a census covering the entire Norwegian population) by using filled prescriptions on asthma drugs as a proxy measure of ...

    • Quantifying the contribution of established risk factors to cardiovascular mortality differences between Russia and Norway 

      Trias-Llimós, Sergi; Pennells, Lisa; Tverdal, Aage; Kudryavtsev, Alexander V; Malyutina, Sofia; Hopstock, Laila Arnesdatter; Iakunchykova, Olena; Nikitin, Yuri; Magnus, Per; Kaptoge, Stephen; Di Angelantonio, Emanuele; Leon, David A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-27)
      Surprisingly few attempts have been made to quantify the simultaneous contribution of well-established risk factors to CVD mortality differences between countries. We aimed to develop and critically appraise an approach to doing so, applying it to the substantial CVD mortality gap between Russia and Norway using survey data in three cities and mortality risks from the Emerging Risk Factor Collaboration. ...