ASPO Abstracts
False-positive screening mammography and long-term adherence among uninsured women in a community outreach program
Category: Cancer Health Disparities
Conference Year: 2022
Abstract Body:
Purpose of the study: False-positive screening mammogram has been associated with anxiety, distress and consequent increase in short-term breast cancer screening adherence. However, little is known about the relationship between false-positive mammogram and screening adherence (both short-term and long-term) among ethnically diverse uninsured women enrolled in community outreach programs. The Breast Screening and Patient Navigation (BSPAN) Program provides access to no-cost breast cancer screening and diagnostic services to uninsured women in North Texas. Using longitudinal BSPAN data (2012-2019), we report prevalence of baseline and longitudinal adherence after a false-positive screening mammogram (Aim 1) and associations of baseline and longitudinal adherence with false-positive results (Aim 2). Methods: Outcomes were baseline adherence (women categorized as adherent if they received their second mammogram 9-30 months after the index mammogram) and longitudinal adherence (assessed only among women categorized as baseline adherent and defined as being adherent after 39 months from the index mammogram). False-positive result was defined as a positive screening mammogram followed by a negative diagnostic mammogram or a negative biopsy within 1 year of the screen. We used multivariable logistic regression and multivariable Cox proportional hazards model to assess associations of false-positive results with baseline and longitudinal adherence, respectively.Results: Of 19,292 women included for analyses, 1,873 (9.7%) had false-positive screening mammogram results. Of these, 832 (44.4%) were baseline adherent, and 31.8% (596 women) were longitudinally adherent. Adherence, both short-term and long-term, was positively associated with false-positive results. Women who had a false-positive screening result were more likely to be baseline adherent (adjusted odds ratio 4.7, 95% Confidence Interval 3.8-5.7) and longitudinally adherent (adjusted hazards ratio 1.2, 95% confidence interval 1.1-1.4) compared to women without a false-positive result.Conclusions: Breast cancer screening adherence increases both in the short-term and long-term after a false-positive screening mammogram, among ethnically diverse uninsured women enrolled in community outreach programs.
Keywords: Screening Mammography, Adherence, Longitudinal, Uninsured, False-positive