Table 1 Clinicopathological characteristics of patients in the entire and PSM cohorts
Variables | Entire cohort | P | PSM cohort | P | ||
|---|---|---|---|---|---|---|
RADG (n = 441) | LADG (n = 723) | RADG (n = 410) | LADG (n = 410) | |||
Age, years | 59.9 ± 11.5 | 59.7 ± 11.4 | 0.826 | 59.8 ± 10.8 | 59.7 ± 11.0 | 0.839 |
Sex, n (%) | 0.768 | 0.189 | ||||
Male | 308 (69.8) | 499 (69.0) | 284 (69.3) | 301 (73.4) | ||
Female | 133 (30.2) | 224 (31.0) | 126 (30.7) | 109 (26.7) | ||
BMI, kg/m2 | 23.2 ± 3.2 | 23.1 ± 3.1 | 0.472 | 23.1 ± 3.1 | 23.1 ± 3.0 | 0.971 |
ASA score, n (%) | 0.630 | 0.741 | ||||
1 | 211 (47.8) | 325 (45.0) | 203 (49.5) | 198 (48.3) | ||
2 | 154 (34.9) | 267 (36.9) | 133 (32.4) | 143 (34.9) | ||
3 | 76 (17.3) | 131 (18.1) | 74 (18.1) | 69 (16.8) | ||
Tumor size, cm | 4.1 ± 2.1 | 4.3 ± 2.6 | 0.233 | 4.1 ± 2.1 | 4.2 ± 2.2 | 0.642 |
Previous abdominal surgery, n (%) | < 0.001 | 0.544 | ||||
No | 416 (94.3) | 601 (83.1) | 389 (94.9) | 385 (94.0) | ||
Yes | 25 (5.7) | 122 (16.9) | 21 (5.1) | 25 (6.0) | ||
Type of reconstruction, n (%) | < 0.001 | 0.939 | ||||
B-I | 142 (32.2) | 370 (51.2) | 134 (32.7) | 138 (33.7) | ||
B-II | 258 (58.5) | 260 (36.0) | 244 (59.5) | 239 (58.3) | ||
Roux-en-Y | 41 (9.3) | 93 (12.8) | 32 (7.8) | 33 (8.0) | ||
Histology type, n (%) | 0.019 | 0.806 | ||||
Well/moderately | 101 (22.9) | 211 (29.2) | 96 (23.4) | 99 (24.1) | ||
Poorly/undifferentiated | 340 (77.1) | 512 (70.8) | 314 (76.6) | 311 (75.9) | ||
Pathologic T stage, n (%) | < 0.001 | 0.879 | ||||
T2 | 193 (43.8) | 177 (24.5) | 172 (42.0) | 165 (40.2) | ||
T3 | 138 (31.3) | 245 (33.9) | 132 (32.2) | 137 (33.4) | ||
T4a | 110 (24.9) | 301 (41.6) | 106 (25.8) | 108 (26.4) | ||
Pathologic N stage, n (%) | 0.732 | 0.942 | ||||
N0 | 190 (43.1) | 323 (44.7) | 182 (44.4) | 188 (45.9) | ||
N1 | 73 (16.6) | 113 (15.6) | 70 (17.1) | 68 (16.6) | ||
N2 | 82 (18.6) | 119 (16.5) | 80 (19.5) | 82 (20.0) | ||
N3 | 96 (21.7) | 168 (23.2) | 78 (19.0) | 72 (17.5) | ||
Pathologic TNM stage, n (%) | 0.079 | 0.970 | ||||
IB | 50 (11.3) | 99 (14.0) | 48 (11.7) | 52 (12.7) | ||
IIA | 36 (8.2) | 76 (10.5) | 34 (8.3) | 38 (9.3) | ||
IIB | 83 (18.8) | 110 (15.1) | 73 (17.8) | 71 (17.3) | ||
IIIA | 64 (14.5) | 130 (17.9) | 60 (14.6) | 58 (14.1) | ||
IIIB | 88 (20.0) | 148 (20.4) | 87 (21.2) | 79 (19.3) | ||
IIIC | 120 (27.2) | 160 (22.1) | 108 (26.4) | 112 (27.3) | ||