Table I.
Clinicopathological characteristics of patients with breast cancer according to tumor subgroup.
| Characteristics | Total (n=972) | Subgroup, n (%) | P-value | |
|---|---|---|---|---|
|
| ||||
| TNBC (n=156) | Non-TNBC (n=816) | |||
| Mean age at diagnosis (years) | 51.7 | 51.5 | 0.943 | |
| Menopausal status (%) | 0.887 | |||
| Prior to menopause | 416 | 68 (43.59) | 348 (42.65) | |
| Following menopause | 556 | 88 (56.41) | 468 (57.35) | |
| Pathological type | 0.995 | |||
| Invasive ductal carcinoma | 790 | 128 (82.05) | 662 (81.13) | |
| Invasive lobular carcinoma | 57 | 9 (5.77) | 48 (5.88) | |
| Medullary carcinoma | 51 | 8 (5.13) | 43 (5.27) | |
| Other | 74 | 11 (7.05) | 63 (7.72) | |
| Tumor size (cm) | 0.971 | |||
| ≤2 | 241 | 38 (24.36) | 203 (24.88) | |
| 2–5 | 592 | 94 (60.26) | 498 (61.03) | |
| >5 | 139 | 24 (15.38) | 115 (14.09) | |
| Grade (%) | 0.002 | |||
| I–II | 646 | 75 (48.08) | 571 (69.98) | |
| III | 326 | 81 (51.92) | 245 (30.02) | |
| TNM stage | 0.752 | |||
| I | 144 | 22 (14.10) | 122 (14.95) | |
| II | 300 | 54 (34.62) | 246 (30.15) | |
| III–IV | 528 | 80 (51.28) | 448 (54.90) | |
| Axillary lymph node status | 0.009 | |||
| Negative | 534 | 109 (69.87) | 425 (52.08) | |
| Positive | 438 | 47 (30.13) | 391 (47.92) | |
| Metastatic lymph nodes | 0.891 | |||
| 1–3 | 206 | 25 (45.45) | 181 (48.14) | |
| 4–9 | 139 | 19 (34.55) | 120 (31.91) | |
| ≥10 | 86 | 11 (20.00) | 75 (19.95) | |
| Family history | 0.969 | |||
| Negative | 883 | 141 (90.38) | 742 (90.93) | |
| Breast cancer | 63 | 10 (6.41) | 53 (6.50) | |
| Other tumor | 26 | 5 (3.21) | 21 (2.57) | |
TNBC, triple-negative breast cancer.