Association between Breast Cancer Screening Intention and Behavior in the Context of Screening Cessation in Older Women.

Abstract

Breast cancer is the most common life-threatening cancer in women and mammography screening is an important intervention that can reduce breast cancer-related mortality and morbidity.1 Not surprisingly, numerous studies have aimed at promoting the adoption of breast cancer screening.2–7 Based on the Theory of Planned Behavior, which posits that intention is the most important and proximal predictor of behavior,8 studies have found moderate association between breast cancer screening intention and receipt of screening,2,3 and a number of interventions have targeted screening intention as the outcome.4–7 All of these studies focused on increasing screening rates. More recently, there is growing recognition that among women aged 75 and older, the harms and burdens of routine mammography screening may outweigh the benefits.9–11 Therefore, the National Cancer Institute and others have called for interventions to reduce overuse and address screening cessation in older women.12 Screening cessation after decades of participation is likely different than the decision to initiate screening and it is not known how older women’s screening intentions relate to screening behavior in the context of de-implementing screening. Given that it can take years and significant resources to learn if an intervention leads to a reduction in overuse of mammography screening in older women, we aimed to examine among women aged 75 and older if lower intentions to be screened predicts lower screening rates in the context of screening cessation.