Table 1.
Clinico-radiological characteristics in the training and validation cohorts.
| Training cohort (n=104) | P | Validation cohort (n=35) | P | |||
|---|---|---|---|---|---|---|
| Benign(n=75) | Malignant(n=29) | Benign(n=25) | Malignant(n=10) | |||
| Age, years (mean ± SD) | 43.87 ± 10.63 | 51.90 ± 9.16 | 0.001* | 42.64 ± 10.37 | 56.10 ± 7.88 | 0.001* |
| Diameter, cm (mean ± SD) | 0.81 ± 0.17 | 0.90 ± 0.14 | 0.011* | 0.81 ± 0.14 | 0.96 ± 0.05 | <0.001* |
| BI-RADS category | <0.001* | 0.039* | ||||
| 3 | 8 | 0 | 3 | 0 | ||
| 4A | 38 | 2 | 14 | 2 | ||
| 4B | 20 | 11 | 4 | 4 | ||
| 4C | 8 | 11 | 4 | 2 | ||
| 5 | 1 | 5 | 0 | 2 | ||
| BPE | 0.393 | 0.646 | ||||
| minimal | 26 | 13 | 9 | 5 | ||
| mild | 46 | 16 | 15 | 5 | ||
| moderate | 3 | 0 | 1 | 0 | ||
| marked | 0 | 0 | 0 | 0 | ||
| Density | 0.221 | 0.157 | ||||
| entirely fatty | 7 | 3 | 0 | 1 | ||
| scattered fibroglandular | 56 | 25 | 22 | 9 | ||
| heterogeneously dense | 12 | 1 | 3 | 0 | ||
| extremely dense | 0 | 0 | 0 | 0 | ||
BI-RADS, Breast Imaging Reporting and Data System; BPE, Background Parenchymal Enhancement; SD, standard deviation. *P < 0.05.