Appendix Table 3.
Diagnostic Test, by Previous Mammography Stratum | Non-CAD, n (unadjusted %) |
CAD, n (unadjusted %) |
Adjusted OR (95% CI)† |
P Value |
---|---|---|---|---|
Non-CAD mammography in previous 9–24 mo (n = 222 861) | ||||
Diagnostic mammography | 10 122 (5.39) | 2720 (7.19) | 1.32 (1.31–1.34) | <0.001 |
Breast ultrasonography | 6476 (3.45) | 1446 (3.82) | 1.14 (1.12–1.16) | <0.001 |
Either diagnostic mammography or breast ultrasonography | 12 906 (6.88) | 3202 (8.47) | 1.25 (1.24–1.27) | <0.001 |
Breast biopsy | 2259 (1.20) | 533 (1.41) | 1.22 (1.18–1.25) | <0.001 |
CAD mammography in previous 9–24 mo (n = 56 700) | ||||
Diagnostic mammography | 197 (5.89) | 3412 (6.32) | 1.13 (1.08–1.18) | <0.001 |
Breast ultrasonography | 124 (3.71) | 1711 (3.17) | 0.85 (0.81–0.90) | <0.001 |
Either diagnostic mammography or breast ultrasonography | 250 (7.47) | 3899 (7.22) | 1.01 (0.97–1.04) | 0.80 |
Breast biopsy | 45 (1.34) | 601 (1.11) | 0.82 (0.76–0.90) | <0.001 |
No previous mammography in the past 24 mo or previous mammography >24 mo (n = 89 795) |
||||
Diagnostic mammography | 4834 (7.06) | 1889 (8.44) | 1.20 (1.18–1.22) | <0.001 |
Breast ultrasonography | 3290 (4.81) | 1124 (5.02) | 1.02 (1.00–1.04) | 0.093 |
Either diagnostic mammography or breast ultrasonography | 6202 (9.06) | 2240 (10.01) | 1.12 (1.10–1.13) | <0.001 |
Breast biopsy | 4834 (7.06) | 1889 (8.44) | 1.07 (1.03–1.11) | <0.001 |
CAD = computer-aided detection; OR = odds ratio.
Based on 369 356 mammograms from 116 738 women.
Adjusted for age, race or ethnicity, rural vs. urban residence, median income of elderly residents within the same ZIP code, presence of stable and unstable comorbid conditions, digital vs. film mammography, year of examination, SEER (Surveillance, Epidemiology and End Results) region, and a radiologist-level random effect. Owing to missing covariate data, adjusted analyses include 337 753 mammograms from 99 540 women.