Table 1. Results of univariate analysis showing clinicopathological variables associated with pCR.
| Characteristics | Total numbers (n=74) | npCR group (n=49) | pCR group (n=25) | t/χ2 | P value |
|---|---|---|---|---|---|
| Age* (years) | 49.7±10.2 | 50.4±9.9 | 48.6±10.9 | −0.687 | 0.496 |
| Lesion morphology** | 0.003 | 0.959 | |||
| Mass-like | 53 (71.62) | 35 (71.43) | 18 (72.00) | ||
| Non-mass-like | 21 (28.38) | 14 (28.57) | 7 (28.00) | ||
| HR** | 7.581 | 0.006 | |||
| Negative | 31 (41.89) | 15 (30.61) | 16 (64.00) | ||
| Positive | 43 (58.11) | 34 (69.39) | 9 (36.00) | ||
| HER2** | 9.243 | 0.002 | |||
| Negative | 39 (52.70) | 32 (65.31) | 7 (28.00) | ||
| Positive | 35 (47.30) | 17 (34.69) | 18 (72.00) | ||
| Ki67*** | 4.108 | 0.043 | |||
| Negative | 14 (18.92) | 13 (26.53) | 1 (4.00) | ||
| Positive | 60 (81.08) | 36 (73.47) | 24 (96.00) |
Data are presented as mean ± standard deviation or n (%). *, independent two-sample t-test; **, Pearson χ2 test; ***, continuous corrected χ2 test. P values: comparisons between pCR and npCR. pCR, pathologic complete response; HR, hormone receptor; HER2, human epidermal growth factor 2.