Table 4.
Patient clinicopathological characteristics
| Variable | PD group | Matched group | χ2 | P-value |
|---|---|---|---|---|
| Age | ||||
| ≥40 | 80 (94.1%) | 77 (90.6%) | 0.75 | 0.387 |
| <40 | 5 (5.9%) | 8 (9.4%) | ||
| Histology | ||||
| IDC | 74 | 74 | χ2=0 | 1 |
| DCIS | 11 | 11 | ||
| TNM stage | ||||
| 0 + I + II | 63 | 63 | χ2=0 | 1 |
| III | 22 | 22 | ||
| Tumor size | ||||
| ≤2 cm | 35 | 37 | χ2=0.096 | 0.76 |
| >2 cm | 50 | 48 | ||
| ALN | ||||
| Positive | 38 | 40 | χ2=1.151 | 0.283 |
| Negative | 47 | 45 | ||
| Hormone receptor | ||||
| Positive | 21 (24.7%) | 54 (63.5%) | χ2=25.98 | 0.001 |
| Negative | 64 (75.3%) | 31 (36.5%) | ||
| HER2 | ||||
| Positive | 60 (70.6%) | 28 (32.9%) | χ2=24.12 | 0.001 |
| Negative | 25 (29.4%) | 57 (67.1%) |
Note: Bold-faced values are statistically significant (P<0.05).
Abbreviations: ALN, axillary lymph node; DCIS, ductal carcinoma in situ; IDC, invasive ductal carcinoma; PD, Paget’s disease; PD-IDC, invasive ductal carcinoma with PD.