Table 4 Comparison of tumor factors between the PCA-NH group and the PCA-H group
|  | PCA-NH (n = 428) | PCA-H (n = 134) | P-value | ||
|---|---|---|---|---|---|
n (%) | Median (IQR) | n (%) | Median (IQR) | ||
Tumor number | |||||
 Solitary | 371 (75.6) |  | 120 (24.4) |  | 0.383 |
 Multiple | 57 (80.3) |  | 14 (19.7) |  |  |
 Tumor’s size (cm) |  | 3.20 (2.00, 5.00) |  | 3.05 (2.04, 4.60) | 0.522 |
Cut margin | |||||
 Free | 407 (76.5) |  | 125 (23.5) |  | 0.416 |
 Infiltrated | 21 (70.0) |  | 9 (30.0) |  |  |
Differentiation | |||||
 Well or moderate | 323 (77.3) |  | 95 (22.7) |  | 0.142 |
 Poor | 100 (72.5) |  | 38 (27.5) |  |  |
Vascular invasion | |||||
 No | 386 (76.9) |  | 116 (23.1) |  | 0.236 |
 Yes | 42 (70.0) |  | 18 (30.0) |  |  |
lymph nodes infiltration | |||||
 No | 342 (76.7) |  | 104 (23.3) |  | 0.567 |
 Yes | 86 (74.1) |  | 30 (25.9) |  |  |