Table 2.
Characteristics of the training and testing sets.
| Characteristic | Training Set | Testing Set | p Value |
|---|---|---|---|
| No. of patients | 357 | 63 | |
| DCIS | 161 (45.1) | 35 (55.5) | |
| MIBC | 196 (54.9) | 28 (45.4) | |
| Age a, y | 57.1 (11.6) | 58.5 (12.8) | >0.05 |
| BMI a, kg/m2 | 24.1 (4.7) | 24.1 (4.9) | >0.05 |
| Premenopause | 124 (34.7) | 21 (33.3) | >0.05 |
| Postmenopause | 233 (65.3) | 42 (66.7) | >0.05 |
| Family history of BC | 61 (18.7) | 16 (25.4) | >0.05 |
Unless otherwise indicated, data in the table are expressed as number (percentage) a Expressed as mean (standard deviation). DCIS: ductal carcinoma in situ; MIBC: minimally invasive breast cancer; BMI: body mass index; BC: breast cancer.