Blar i forfatter "Bjerkaas, Eivind"

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    • Aspects of Active Smoking and Breast Cancer 

      Bjerkaas, Eivind (Doctoral thesis; Doktorgradsavhandling, 2014-10-24)
      Summary: According to the WHO, breast cancer is by far the most frequently diagnosed cancer, and the most frequent cause of cancer death among women in the world. Tobacco smoking is the single largest cause of cancer worldwide and has been linked to cancer in most organ systems. The aim of this thesis was to illuminate the association between smoking and breast cancer incidence, mortality, and to ...

    • The Association between Lifetime Smoking Exposure and Breast Cancer Mortality – Results from a Norwegian Cohort 

      Bjerkaas, Eivind; Gram, Inger Torhild; Parajuli, Ranjan; Weiderpass, Elisabete; Mascarinec, G; Engeland, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Several recent cohort studies have found an association between smoking and breast cancer, but the association between lifetime smoking exposure and breast cancer mortality is less well described. We examined whether smoking before breast cancer diagnosis is a predictor of breast cancer mortality in a large cohort with more than 4.1 million years of follow-up, with a special focus on women who ...

    • 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 ...

    • Hypotermi og væskebehandling 

      Bjerkaas, Eivind; Iversen, Rolf Arne (Master thesis; Mastergradsoppgave, 2002)

    • Smoking duration before first childbirth: an emerging risk factor for breast cancer? Results from 302,865 Norwegian women 

      Bjerkaas, Eivind; Parajuli, Ranjan; Weiderpass, Elisabete; Engeland, Anders; Gertraud, Maskarinec; Selmer, Randi; Gram, Inger Torhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Purpose: Recently, The International Agency for Research on Cancer classified cigarette smoking as possibly carcinogenic to the human breast. Since some new cohort studies have suggested that this risk is confined to women who started to smoke before first childbirth, we wanted to examine the association between smoking and breast cancer, with a focus on time of smoking initiation in relation to the ...

    • Smoking increases rectal cancer risk to the same extent in women as in men: results from a Norwegian cohort study 

      Parajuli, Ranjan; Bjerkaas, Eivind; Aage, Tverdal; Le Marchand, Loïc; Weiderpass, Elisabete; Gram, Inger Torhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-05-06)
      Background: Smoking has recently been established as a risk factor for rectal cancer. We examined whether the smoking-related increase in rectal cancer differed by gender. Methods: We followed 602,242 participants (49% men), aged 19 to 67 years at enrollment from four Norwegian health surveys carried out between 1972 and 2003, by linkage to Norwegian national registries through December 2007. ...

    • Social inequalities and smoking-associated breast cancer - Results from a prospective cohort study 

      Bjerkaas, Eivind; Parajuli, Ranjan; Engeland, Anders; Maskarinec, Gertraud; Weiderpass, Elisabete; Gram, Inger Torhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-22)
      Objective. The association between smoking and breast cancer has been found in most recent, large cohort studies. We wanted to investigate how smoking-associated breast cancer varies by level of education, a wellestablished measure of socioeconomic status. <p>Methods. We included 302,865 women with 7490 breast cancer cases. Participants were assigned to low, moderate or high level of education ...