Table 1.
Population characteristics.
| Characteristics | Total | ALNM | Non-ALNM | P | |
|---|---|---|---|---|---|
| number | n=252 | n=98 | n=154 | ||
| All patients | Age (mean ± SD), years old | 51.3 ± 11.24 | 51.0 ± 11.05 | 51.6 ± 11.40 | 0.698 |
| Tumor size (mean ± SD), cm | 2.1 ± 0.97 | 2.4 ± 1.15 | 1.9 ± 0.78 | <0.01 | |
| Tumor margin | 0.079 | ||||
| Regular | 102 (40.5) | 33 (33.7) | 69 (44.8)) | ||
| Irregular | 150 (59.5) | 65 (66.3) | 85 (55.2) | ||
| TIC curve type | 0.201 | ||||
| II | 168 (66.7) | 70 (71.4) | 98 (63.6) | ||
| III | 84 (33.3) | 28 (28.6) | 56 (36.4) | ||
| Number | n=50 | n=20 | n=30 | ||
| Testing dataset | Age (mean ± SD), years old | 50.7 ± 10.74 | 49.1 ± 11.77 | 51.7 ± 10.06 | 0.394 |
| Tumor size (mean ± SD), cm | 2.0 ± 0.80 | 2.3 ± 0.92 | 1.9 ± 0.67 | 0.086 | |
| Tumor margin | 0.387 | ||||
| Regular | 22 (44.0) | 7 (35.0) | 15 (50.0) | ||
| Irregular | 28 (56.0) | 13 (65.0) | 15 (50.0) | ||
| TIC curve type | 0.243 | ||||
| II | 29 (58.0) | 14 (70.0) | 15 (50.0) | ||
| III | 21 (42.0) | 6 (30.0) | 15 (50.0) |
ALNM, axillary lymph node metastasis; SD, standard deviation; TIC, time-intensity curve.