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Risk Factors of Breast Cancer in Kyzylorda Oblast of Kazakhstan: a Case-Control Study

  • Toleutay, Ulpan (Kazakhstan School of Public Health of Ministry of Health) ;
  • Reznik, Vitaly (Kazakhstan School of Public Health of Ministry of Health) ;
  • Kalmatayeva, Zhanna (Kazakhstan School of Public Health of Ministry of Health) ;
  • Smigelskas, Kastytis (Lithuanian University of Health Sciences)
  • Published : 2013.10.30

Abstract

Background: Breast cancer in Kazakhstan and its Kyzylorda oblast is the most prevalent cancer in women and features increasing trends of incidence. The aim of study was to reveal risk factors for breast cancer among women of Kyzylorda oblast of Kazakhstan. Materials and Methods: A hospital-based case-control study was conducted at Kyzylorda oblast Oncology Center, including 114 cases of breast cancer and 196 controls. Binary logistic regression analysis was performed. Results: Social and behavioral risk factors for breast cancer were evaluated, among which unfavorable living conditions, chronic stress, unilateral breastfeeding, breastfeeding less than 3 months and over 2 years, abortions, and hereditary predisposition were found to be related with increased breast cancer risk. Breastfeeding for 6-24 months was found to be protective. Conclusions: The findings may have significant impact on activity planning aimed towards breast cancer reduction among women in Kazakhstan.

Keywords

Breast cancer;case;control study;risk factors;Kazakhstan

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