Table 4.
Clinical characteristics of breast cancer patients between two groups.
| EG, n = 212 | CG, n = 212 | χ2 and t value | P-values | |
|---|---|---|---|---|
| Age, year | 47.7 ± 24.6 | 49.1 ± 26.0 | 0.345 | 0.621 |
| Before menopause | 125(59) | 128(60.4) | 0.088 | 0.766 |
| Type of histology | ||||
| Invasive ductal | 187(154.5) | 169(139.7) | 5.705 | 0.127 |
| Invasive lobular | 14(11.6) | 25(20.7) | ||
| Mixed | 6(5) | 10(8.3) | ||
| Others | 5(4.1) | 8(6.6) | ||
| T staging, n (%) | ||||
| T1 (= 2 cm) | 53(25) | 49(23.1) | 0.232 | 0.972 |
| T2 (2 cm < T ≤ 5 cm) | 124(58.5) | 126(59.4) | ||
| T3 (> 5 cm) | 33(15.6) | 35(16.5) | ||
| T4 (Chest wall or skin infiltration) | 2(0.9) | 2(0.9) | ||
| N staging, n (%) | ||||
| N0 | 56(26.4) | 58(27.4) | 0.341 | 0.952 |
| N1 | 117(55.2) | 113(53.3) | ||
| N2 | 20(9.4) | 23(10.8) | ||
| N3 | 19(9) | 18(8.5) | ||
| ER situation, negative, n (%) | 60(28.3) | 58(27.4) | 0.047 | 0.828 |
| PR situation, negative, n (%) | 75(35.4) | 79(37.3) | 0.163 | 0.686 |
| HER2 situation, negative, n (%) | 158(74.5) | 151(71.2) | 0.585 | 0.444 |
| Breast surgery | ||||
| Conserving, n (%) | 53(25) | 48(22.6) | 0.325 | 0.569 |
| Removal, n (%) | 159(75) | 164(77.4) | ||