{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T20:23:05Z","timestamp":1790367785355,"version":"4.1.0"},"reference-count":54,"publisher":"American Medical Association (AMA)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Oncol"],"published-print":{"date-parts":[[2024,2,1]]},"abstract":"Importance<\/jats:title>Advanced-stage breast cancer rates vary by race and ethnicity, with Black women having a 2-fold higher rate than White women among regular screeners. Clinical risk factors that explain a large proportion of advanced breast cancers by race and ethnicity are unknown.<\/jats:p><\/jats:sec>Objective<\/jats:title>To evaluate the population attributable risk proportions (PARPs) for advanced-stage breast cancer (prognostic pathologic stage IIA or higher) associated with clinical risk factors among routinely screened premenopausal and postmenopausal women by race and ethnicity.<\/jats:p><\/jats:sec>Design, Setting, and Participants<\/jats:title>This cohort study used data collected prospectively from Breast Cancer Surveillance Consortium community-based breast imaging facilities from January 2005 to June 2018. Participants were women aged 40 to 74 years undergoing 3\u202f331\u202f740 annual (prior screening within 11-18 months) or biennial (prior screening within 19-30 months) screening mammograms associated with 1815 advanced breast cancers diagnosed within 2 years of screening examinations. Data analysis was performed from September 2022 to August 2023.<\/jats:p><\/jats:sec>Exposures<\/jats:title>Heterogeneously or extremely dense breasts, first-degree family history of breast cancer, overweight\/obesity (body mass index &amp;gt;25.0), history of benign breast biopsy, and screening interval (biennial vs annual) stratified by menopausal status and race and ethnicity (Asian or Pacific Islander, Black, Hispanic\/Latinx, White, other\/multiracial).<\/jats:p><\/jats:sec>Main Outcomes and Measures<\/jats:title>PARPs for advanced breast cancer.<\/jats:p><\/jats:sec>Results<\/jats:title>Among 904\u202f615 women, median (IQR) age was 57 (50-64) years. Of the 3\u202f331\u202f740 annual or biennial screening mammograms, 10.8% were for Asian or Pacific Islander women; 9.5% were for Black women; 5.3% were for Hispanic\/Latinx women; 72.0% were for White women; and 2.0% were for women of other races and ethnicities, including those who were Alaska Native, American Indian, 2 or more reported races, or other. Body mass index PARPs were larger for postmenopausal vs premenopausal women (30% vs 22%) and highest for postmenopausal Black (38.6%; 95% CI, 32.0%-44.8%) and Hispanic\/Latinx women (31.8%; 95% CI, 25.3%-38.0%) and premenopausal Black women (30.3%; 95% CI, 17.7%-42.0%), with overall prevalence of having overweight\/obesity highest in premenopausal Black (84.4%) and postmenopausal Black (85.1%) and Hispanic\/Latinx women (72.4%). Breast density PARPs were larger for premenopausal vs postmenopausal women (37% vs 24%, respectively) and highest among premenopausal Asian or Pacific Islander (46.6%; 95% CI, 37.9%-54.4%) and White women (39.8%; 95% CI, 31.7%-47.3%) whose prevalence of dense breasts was high (62%-79%). For premenopausal and postmenopausal women, PARPs were small for family history of breast cancer (5%-8%), history of breast biopsy (7%-12%), and screening interval (2.1%-2.3%).<\/jats:p><\/jats:sec>Conclusions and Relevance<\/jats:title>In this cohort study among routinely screened women, the proportion of advanced breast cancers attributed to biennial vs annual screening was small. To reduce the number of advanced breast cancer diagnoses, primary prevention should focus on interventions that shift patients with overweight and obesity to normal weight.<\/jats:p><\/jats:sec>","DOI":"10.1001\/jamaoncol.2023.5242","type":"journal-article","created":{"date-parts":[[2023,12,7]],"date-time":"2023-12-07T16:31:48Z","timestamp":1701966708000},"page":"167","source":"Crossref","is-referenced-by-count":11,"title":["Population Attributable Risk of Advanced-Stage Breast Cancer by Race and Ethnicity"],"prefix":"10.1001","volume":"10","author":[{"given":"Karla","family":"Kerlikowske","sequence":"first","affiliation":[{"name":"Departments of Medicine and Epidemiology and Biostatistics, University of California, San Francisco"},{"name":"General Internal Medicine Section, Department of Veterans Affairs, University of California, San Francisco"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Public Health Sciences, University of California, Davis"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael C. 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