Table 1. Patient characteristics.
| Characteristics | All (n=269) | CPG (n=110) | RPG (n=159) | P | |
|---|---|---|---|---|---|
| Age (yr) | 63.9±10.6 | 62.8±10.2 | 64.7±10.7 | 0.135 | |
| Sex | 0.098 | ||||
| Male | 201 (74.7) | 88 (80) | 113 (71.1) | ||
| Female | 68 (25.3) | 22 (20) | 46 (28.9) | ||
| BMI (kg/m2) | 23.6±3.2 | 23.3±2.6 | 23.8±3.5 | 0.233 | |
| ASA classification | 0.532 | ||||
| I | 121 (45) | 53 (48.2) | 68 (42.8) | ||
| II | 140 (52) | 53 (48.2) | 87 (54.7) | ||
| III | 8 (3) | 4 (3.6) | 4 (2.5) | ||
| Abdominal operation history | 0.102 | ||||
| No | 242 (90) | 95 (86.4) | 147 (92.5) | ||
| Yes | 27 (10) | 15 (13.6) | 12 (7.5) | ||
| No. of tumors | 0.640 | ||||
| 1 | 254 (94.4) | 103 (93.6) | 151 (95) | ||
| 2 | 15 (5.6) | 7 (6.4) | 8 (5.0) | ||
| Tumor location | 0.120 | ||||
| Lower 1/3rd | 196 (72.9) | 82 (74.5) | 114 (71.7) | ||
| Middle 1/3rd | 67 (24.9) | 28 (25.5) | 39 (24.5) | ||
| Upper 1/3rd | 6 (2.2) | 0 | 6 (3.8) | ||
| Tumor size (mm) | 20.7±9.6 | 20.1±9.5 | 21.2±9.6 | 0.356 | |
| Differentiation | 0.365 | ||||
| Differentiated | 175 (65.1) | 68 (61.8) | 107 (67.3) | ||
| Undifferentiated | 94 (34.9) | 42 (38.2) | 52 (32.7) | ||
| Depth of invasion | 0.802 | ||||
| pT1 | 252 (93.7) | 102 (92.7) | 150 (94.3) | ||
| pT2 | 9 (3.3) | 5 (4.5) | 4 (2.5) | ||
| pT3 | 4 (1.5) | 1 (0.9) | 3 (1.9) | ||
| pT4 | 4 (1.5) | 2 (1.8) | 2 (1.3) | ||
| Nodal metastasis | 0.525 | ||||
| pN0 | 247 (91.8) | 103 (93.6) | 144 (90.6) | ||
| pN1 | 13 (4.8) | 3 (2.7) | 10 (6.3) | ||
| pN2 | 5 (1.9) | 3 (2.7) | 2 (1.3) | ||
| pN3 | 4 (1.5) | 1 (0.9) | 3 (1.8) | ||
| pTNM stage | 0.848 | ||||
| I | 253 (94.1) | 103 (93.6) | 150 (94.3) | ||
| II | 10 (3.7) | 5 (4.5) | 5 (3.1) | ||
| III | 6 (2.2) | 2 (1.8) | 4 (2.5) | ||
Data are represented as mean±standard deviation or number (%).
CPG = conventional laparoscopic gastrectomy; RPG = reduced-port gastrectomy; BMI = body mass index; ASA = American Society of Anesthesiologists; pTNM = pathological tumor, node, metastasis.