Table 1.
Clinical parameters of patients included in this study n (%)
| Characteristics | Patients (n = 634) |
| Gender | |
| Male | 467 (73.6) |
| Female | 167 (26.4) |
| Age (yr) | 56.1 ± 12.1 |
| Tumor size (cm) | 4.3 ± 1.7 |
| Tumor location | |
| Lower | 521 (80.8) |
| Middle | 71 (11.2) |
| Lower and middle | 42 (8.0) |
| Digestive tract construction | |
| Billroth I | 469 (74.0) |
| Billroth II | 148 (22.3) |
| Roux-en-Y | 17 (3.7) |
| Pathology | |
| Differentiated | 140 (22.1) |
| Undifferentiated | 494 (77.9) |
| Depth of invasion | |
| pT1 | 118 (18.6) |
| pT2 | 174 (27.4) |
| pT3 | 342 (54.0) |
| pN category | |
| pN0 | 195 (30.8) |
| pN1 | 232 (36.6) |
| pN2 | 156 (24.6) |
| pN3 | 51 (8.0) |
| rN category | |
| rN0 | 195 (30.8) |
| rN1 | 172 (27.1) |
| rN2 | 156 (24.6) |
| rN3 | 111 (17.5) |
| Number of resected LNs | 23.1 ± 8.6 |