Table 1 Women factors associated with false-positive results in screening mammogram.
From: Factors associated with false-positive screening mammography in São Paulo, Brazil
Factors related to women¹ | True-positives | False-positives | Multivariate analysis ² |
|---|---|---|---|
N (%) | N (%) | Odds Ratio (95% CI) | |
Age | |||
< 50 | 1028 (23.6) | 2843 (51.3) | 2.9 (1.2–6.9) |
50–59 | 1927 (44.2) | 1847 (33.3) | 0.9 (0.4–1.8) |
60–69 | 1175 (26.9) | 609 (11) | 0.7 (0.3–1.4) |
70+ | 233 (5.3) | 245 (4.4) | [Reference] |
Skin color | |||
Yellow | 6 (0.3) | 3 (0.1) | - |
Black | 88 (4.8) | 95 (4.6) | - |
White | 1406 (76.4) | 1576 (76.7) | - |
Brown | 340 (18.5) | 382 (18.6) | - |
Missing | 2523 | 3488 | - |
Education | |||
Illiterate | 33 (3.5) | 38 (3.4) | - |
Incomplete primary school | 321 (34.1) | 290 (26.2) | - |
Complete primary school | 327 (34.7) | 403 (36.4) | - |
Complete secondary school | 198 (21) | 308 (27.8) | - |
Graduated | 63 (6.7) | 67 (6.1) | - |
Missing | 3421 | 4438 | - |
Family history of cancer | |||
Yes | 729 (20.3) | 631 (14.2) | 0.6 (0.2–1.9) |
No | 2865 (79.7) | 3814 (85.8) | [Reference] |
Missing | 769 | 1099 | - |
Skin type of breast | |||
Thickened | 201 (4.6) | 583 (10.5) | 1.5 (0.7–2.4) |
Retracted | 307 (7) | 298 (5.4) | 0.8 (0.2–2.6) |
Normal | 3855 (88.4) | 4663 (84.1) | [Reference] |
Breast density | |||
Dense/predominant dense | 944 (21.6) | 2668 (48.1) | 1.6 (1.5–1.9) |
Fatty/predominant fatty | 3419 (78.4) | 2876 (51.9) | [Reference] |
Hormonal therapy | |||
Yes | 1106 (25.3) | 2659 (48) | 1.4 (1.1–2.3) |
No | 3257 (74.7) | 2885 (52) | [Reference] |
Previous Radiotherapy | |||
Yes | 389 (8.9) | 238 (4.3) | 0.7 (0.3–1.7) |
No | 3974 (91.1) | 5306 (95.7) | [Reference] |
