Fig. 2From: Breast cancer risk factors in Iranian women: a systematic review and meta-analysis of matched case–control studiesThe association between breast cancer and different risk factors. A: Occupation (employee vs housewife); B: education (lower than university vs university); C: marital status (single, divorced, widow vs married); D: place of residence (rural vs urban); E: age at marriage (≥ 18 vs < 18); F: BMI (BMI level vs normal range)Back to article page