Table 4.
The influence of BI-RADS and age on positive predictive value, expressed as odds ratios from logistic regression analysis
| n a | PPV (%)b | OR | (CI 95 %) | |
|---|---|---|---|---|
| BI-RADS category | ||||
| 0 | 811 | 114 (14.1) | 1 | - |
| 4 | 578 | 226 (39.1) | 4.6 | (3.4-6.2) |
| 5 | 156 | 145 (92.9) | 93 | (47–183) |
| Age | ||||
| 50-54 | 528 | 104 (19.7) | 1 | - |
| 55-59 | 307 | 84 (27.4) | 1.4 | (0.94-2.1) |
| 60-67 | 396 | 154 (39.6) | 2.4 | (1.7-3.5) |
| 68-76 | 314 | 143 (45.5) | 3.1 | (2.2-4.6) |
OR odds ratio, CI confidence interval, PPV positive predictive value
a Total number = 1,545
b Total number = 484