Are breast cancer screening practices associated with sociodemographic status and healthcare access? Analysis of a French cross-sectional study

Abstract
The aim of this study was to analyse the role of women's sociodemographic and healthcare access characteristics according to breast cancer screening practices (organized, individual or no screening). A cross-sectional study was set up in seven French districts using a self-administered postal questionnaire. Randomization was stratified proportionally on age and urban/rural status in each district separately among attendees and nonattendees to the organized breast cancer screening programme (OS). A total of 5638 women aged 50-74 years returned their questionnaires: 1480 in the attendee OS group and 4158 in the nonattendee group. Among them, 3537 declared having undergone a recent mammography outside the organized programme (individual, IS group) and 621 declared never having undergone a mammography or having done so more than 2 years ago (NS group). Analyses showed a gradient between the three groups (IS, OS and NS, respectively) in their association with breast cancer screening practices considering three factors: an increasing gradient was observed for renunciation of basic healthcare for financial reasons, a decreasing gradient in the regular visit to a medical gynaecologist and having had a Pap smear in the last 3 years. Three other variables that showed a decreasing gradient are: living with a partner, current use of hormone replacement therapy and having had a check-up in the last 5 years. In conclusion, the main differences between breast cancer screening practices were largely associated with difficulties in healthcare access, considering regular gynaecological visits in particular.