Table 1 Comparisons of baseline demographic, clinical and clinicopathologic characteristics between the derivation and validation groups
Characteristics | Derivation group | Validation group | P |
|---|---|---|---|
Number | 1506 | 1506 | |
Age (years) | 58.47 (11.09) | 58.76 (11.30) | 0.503 |
Males | 72.78% (1096) | 75.9% (1143) | 0.051 |
Ever smokers | 18.39% (277) | 18.53% (279) | 0.925 |
Ever drinkers | 5.84% (88) | 5.31% (80) | 0.525 |
Family cancer history (+) | 8.43% (127) | 8.7% (131) | 0.795 |
Body mass index (kg/m2) | 22.72 (3.14) | 22.91 (3.01) | 0.104 |
Systolic blood pressure (mmHg) | 124.16 (19.03) | 124.84 (19.92) | 0.353 |
Diastolic blood pressure (mmHg) | 76.85 (11.37) | 77.43 (11.51) | 0.179 |
Fasting blood glucose (mmol/L) | 6.21 (2.48) | 6.19 (2.43) | 0.853 |
AI | 3.95 (2.28) | 3.88 (1.93) | 0.209 |
THR | 1.41 (1.47) | 1.36 (1.27) | 0.339 |
LHR | 3.30 (1.79) | 3.28 (1.56) | 0.505 |
TNM stage | 0.122 | ||
I | 12.44% (177) | 11.76% (167) | |
II | 15.95% (227) | 13.87% (197) | |
III | 54.67% (778) | 59.01% (838) | |
IV | 16.94% (241) | 15.35% (218) | |
Lauren’s classification | 0.551 | ||
Intestinal type | 39.77% (552) | 38.04% (528) | |
Diffuse type | 60.23% (836) | 61.96% (860) | |
Tumor embolus | 0.976 | ||
Positive | 39.01% (541) | 38.95% (541) | |
Negative | 60.99% (846) | 61.05% (848) | |
Tumor size (cm) | 5.55 (2.85); 5 (3.5, 7) | 5.66 (3.13); 5 (3.5, 7) | 0.337 |
Number of lymph node metastasis | 5.60 (6.91); 3 (0, 8) | 5.70 (7.10); 3 (0, 8) | 0.724 |