Table 5.

Diagnostic Test Use After Screening Mammography Among Women Without Breast Cancer, by CAD Use^*

Diagnostic Test Within 90 d of Screening Mammography	Non-CAD n (%)†	CAD n (%)‡	Adjusted OR Associated With CAD Use vs. Nonuse (95% CI)§	P Value
Diagnostic mammography	14 979 (5.8)	7939 (7.0)	1.28 (1.27–1.29)	<0.001
Breast ultrasonography	9767 (3.8)	4227 (3.8)	1.07 (1.06–1.09)	<0.001
Either diagnostic mammography or breast ultrasonography	19 136 (7.5)	9240 (8.2)	1.19 (1.18–1.20)	<0.001
Breast biopsy	3410 (1.3)	1512 (1.3)	1.10 (1.08–1.12)	<0.001

CAD = computer-aided detection; OR = odds ratio.

^*Data based on 369 356 mammograms from 116 738 women.

^†Data based on 256 652 mammograms.

^‡Data based on 112 704 mammograms.

^§Adjusted for age, race or ethnicity, rural vs. urban residence, median income of elderly residents within the same ZIP code, time since previous mammogram, use of CAD on the previous examination, presence of stable and unstable comorbid conditions, digital vs. film mammography, year of examination, and SEER (Surveillance, Epidemiology and End Results) region. Owing to missing covariate data on 8.5% of mammograms, adjusted analyses include 337 753 mammograms from 99 540 women.