REPRODUCTIVE CHARACTERISTICS AND THE RISK OF BREAST CANCER: A CASE-CONTROL STUDY

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YAVARI P.; MOUSAVIZADEH M.A.; SADR ALHEFAZI B.; KHODABAKHSH R.; MADANI H.; MEHRABI YAD ELAH

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Journal: Iranian Journal of Epidemiology Year:2006 | Volume:1 | Issue:2 Page(s): 11-19

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Title

REPRODUCTIVE CHARACTERISTICS AND THE RISK OF BREAST CANCER: A CASE-CONTROL STUDY

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Keywords

BREAST CANCERQ2

CASE-CONTROL STUDYQ4

REPRODUCTIVE FACTORSQ3

Abstract

Background & Objectives: BREAST CANCER is a common malignancy in women in many parts of the world. The incidence of BREAST CANCER in Iranian women is growing. Iranian patients are relatively younger than their western counterparts. We conducted a CASE-CONTROL STUDY to determine roles of REPRODUCTIVE FACTORS for BREAST CANCER among women in Iran.Methods: A hospital based CASE-CONTROL STUDY was conducted in 2004 at a teaching hospital in Tehran, Iran. A total of 303 cases of BREAST CANCER and 303 healthy controls were interviewed. Cases were identified through the oncology department of a university hospital and controls were recruited from other wards or out-patients clinics at the same hospital. Controls were matched to cases on age. Demographic and reproductive data were ascertained by personal interview using a structured questionnaire. Informed consent was obtained from cases and controls. Odds ratios and 95% confidence intervals for BREAST CANCER were derived using logistic regression analysis.Results: Mean ±SD age of cases and controls was 48.8±9.8 and 50.2±11.1 years, respectively (range 24-84). The final model constructed after multivariate analysis indicated that factors such as never being married, menopause, older age at first live birth, parity, use of oral contraceptives, and history of chest X-ray between adolescence and the age of 30 yrs were significantly associated with BREAST CANCER. Variables such as higher education, early age at menarche, abortion, breast feeding and its duration did not constitute significant risk factors.Conclusions: Marital status, history of chest X-ray between adolescence and the age of 30, number of live births, and age at first live birth, menopause, and oral contraceptive use seem to increase the risk of developing BREAST CANCER among women in Iran.

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APA: Copy

YAVARI, P., MOUSAVIZADEH, M.A., SADR ALHEFAZI, B., KHODABAKHSH, R., MADANI, H., & MEHRABI, YAD ELAH. (2006). REPRODUCTIVE CHARACTERISTICS AND THE RISK OF BREAST CANCER: A CASE-CONTROL STUDY. IRANIAN JOURNAL OF EPIDEMIOLOGY, 1(2), 11-19. SID. https://sid.ir/paper/120633/en

Vancouver: Copy

YAVARI P., MOUSAVIZADEH M.A., SADR ALHEFAZI B., KHODABAKHSH R., MADANI H., MEHRABI YAD ELAH. REPRODUCTIVE CHARACTERISTICS AND THE RISK OF BREAST CANCER: A CASE-CONTROL STUDY. IRANIAN JOURNAL OF EPIDEMIOLOGY[Internet]. 2006;1(2):11-19. Available from: https://sid.ir/paper/120633/en

IEEE: Copy

P. YAVARI, M.A. MOUSAVIZADEH, B. SADR ALHEFAZI, R. KHODABAKHSH, H. MADANI, and YAD ELAH MEHRABI, “REPRODUCTIVE CHARACTERISTICS AND THE RISK OF BREAST CANCER: A CASE-CONTROL STUDY,” IRANIAN JOURNAL OF EPIDEMIOLOGY, vol. 1, no. 2, pp. 11–19, 2006, [Online]. Available: https://sid.ir/paper/120633/en

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