Table 3.

Adjusted Hazard Ratios from Cox Proportional Hazards Models for Screening Mammogram Result, Overall and Stratified by Breast Density Group

		BI-RADS BREAST DENSITY
Prior Mammogram Result, Recommendation	OVERALL aHR (95% CI)*	Almost entirely fat aHR (95% CI)**	Scattered fibroglandular aHR (95%CI)**	Heterogeneously dense aHR (95% CI)**	Extremely dense aHR (95% CI)**
True-negative	REF	REF	REF	REF	REF
False-positive, additional imaging	1.39 (1.35, 1.44)	1.70 (1.42, 2.04)	1.44 (1.37, 1.52)	1.34 (1.28, 1.40)	1.44 (1.31, 1.58)
False-positive, biopsy	1.76 (1.65, 1.88)	1.76 (1.17, 2.66)	1.75 (1.56, 1.95)	1.74 (1.59, 1.91)	1.87 (1.53, 2.27)

^*aHR is adjusted hazard ratio with adjustment for age, race/ethnicity, history of breast biopsy, family history of breast cancer, previous mammogram interval, menopause status, and stratified by BI-RADS breast density

^**aHR is adjusted for age, race/ethnicity, history of breast biopsy, family history of breast cancer, previous mammogram interval, and menopause status