Prevalence and risk factors of benign breast diseases among women in Wuhai municipality of Inner Mongolia:a cross-sectional study

ObjectiveTo explore the prevalence and risk factors of benign breast diseases (BBD) among occupation and community women in Wuhai municipality of Inner Mongolia Autonomous Region (Inner Mongolia) for identifying populations at high-risk and improving the treatment of the diseases.MethodsBy using multistage random cluster sampling,6 553 women were selected from enterprises and communities in 3 districts of Wuhai municipality,Inner Mongolia and surveyed with a self-administered questionnaire on status and relevant factors of BBD and measurements of height and weight by professional staff during June to November 2014.T-test/chi-square,multivariate logistic regression analysis were applied to determine the risk factors.ResultsThe overall prevalence rate of BBD was 22.5% among the women.The results of multivariate logistic regression analyses showed that the elder women had a higher risk of BBD compared to those aged below 35 years,with the odds ratio (OR) and 95% confidence interval (95%CI) of 2.348 (1.957-2.817),2.521 (2.059-3.086),and 1.778 (1.343-2.353) for the women aged 35-44,45-54,and 55-65 years old.Higher BBD risk were observed among the women with the education of senior high school (OR=1.572,95%CI=1.294-1.909) and college or above (OR=2.898，95%CI=2.393-3.510) compared to those with the education of junior high school or below.The women who underwent abortion of once(OR=1.390,95%CI=1.192-1.621) and twice or more (OR=1.562，95%CI=1.320-1.848) had higher BBD risk than those without abortion history.The results revealed the protective factors of elder menarche age of ≥14 years (OR=0.786，95%CI=0.678-0.911) and being unmarried (OR=0.424,95%CI=0.288-0.625).ConclusionThe prevalence of BBD is influenced by age,education level,marital status,menarche age,and abortion history and education on BBD prevention should be promoted among occupation and community women in Wuhai municipality.