Lifestyle and occupational factors associated with participation in breast mammography screening among Western Australian women

Objectives Various lifestyle and occupational factors have been associated with an increased risk of breast cancer, but there is limited research investigating the relationship between these factors and participation in breast cancer screening. This study explores the associations between lifestyle and occupational factors and participation in breast mammography screening among women living in Western Australia.Methods This study involved 1705 women aged 40 and older who participated as controls in the Breast Cancer Environment and Employment Study conducted in Western Australia. Self-reported questionnaire data were collected on participation in mammography screening, demographic factors, and lifestyle and occupational variables (smoking, physical activity, alcohol consumption, body mass index, use of contraceptive pill and hormone replacement therapy, breastfeeding, occupation, and participation in shift work). Multivariate modified Poisson regression was used to identify variables associated with ever participation in breast mammography screening.Results Just over 88% of women reported having ever had a mammogram. Likelihood of having ever had a mammogram was higher among women who had ever used hormone replacement therapy (adjusted prevalence ratio (aPR) = 1.05, 95% CI 1.02–1.07). Women who worked in clerical occupations (aPR = 1.06, 95% CI 1.01–1.11) or home duties (aPR = 1.05, 95% CI 1.00–1.11) were also more likely to report having ever had a mammogram compared with those in professional or technical occupations.Conclusions Participation in mammography screening was found to differ by lifestyle and occupational factors. These results have important implications for public health strategies on improving screening participation.