Abstract Background Organized breast cancer screening (BCS) programs are effective measures among women aged 50-69 for preventing the fifth cause of death in Germany. However, still participation rates have not yet reached EU standards. It is unclear which and how sociodemographic factors are related to BCS attendance. This scoping review aims to identify sociodemographic inequalities in BCS attendance among 50-69-year-old women following implementing the Organized Screening Program in Germany. Methods Following PRISMA guidelines, we searched the Web of Science, Scopus, MEDLINE, PsycINFO, and CINAHL. We included primary studies with a quantitative study design and reviews examining BCS attendance among women aged 50-69 with data from 2005 onwards in Germany. Harvest plots depicting effect size direction for the different identified sociodemographic inequalities were developed. Results We screened 476 titles and abstracts and 33 full texts. In total, 27 records were analysed, 14 were national reports, and 13 peer-reviewed articles. Eight sociodemographic variables were identified and summarised in the harvest plots: age, education, income, migration status, type of district, employment status, partnership cohabitation and health insurance. Older women, women with lower incomes and migration backgrounds who live in rural areas and lack private insurance, respond more favourably to BCS invitations. However, from a lifetime perspective, these associations only hold for migration background, are reversed for income and urban residency, and are complemented by partner cohabitation. Finally, women living in the federal states of Lower Saxony, Saxony, Mecklenburg-Western Pomerania, Saxony-Anhalt, and Thuringia showed higher attendance rates in the last two years. Conclusions High-quality research is needed to identify women at higher risk of not attending BCS in Germany, particularly as the overall attendance rate still falls below European standards. Key messages • High-quality research is needed to identify women at higher risk of not attending BCS in Germany, particularly as the overall attendance rate still falls below European standards. • Women without migration background, high income, living in rural areas, and not cohabitating with their partners are at higher risk of never attending BCS in Germany.
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