Table 1. Demographic characteristics of subjects.
| Total population | Age-matching population | |||
| GC cases | Controls | GC cases | Controls | |
| Number | 387 | 392 | 294 | 294 |
| Age | 59.4±13.2 | 50.6±11.7 | 55.30±9.62 | 54.70±11.01 |
| P | 0.001a | 0.067a | ||
| Gender | ||||
| Male | 264 (68.2) | 237 (60.5) | 188 (63.9) | 161 (54.8) |
| Female | 123 (31.8) | 155 (39.5) | 106 (36.1) | 133 (45.2) |
| P | 0.005b | 0.023b | ||
| Geographic regions | ||||
| Nanjing | 342 (88.4) | 347 (88.5) | 262 (89.1) | 267 (90.8) |
| Danyang | 37 (9.6) | 37 (9.4) | 25 (8.5) | 19 (6.5) |
| Yancheng | 8 (2.0) | 8 (2.0) | 7 (2.4) | 8 (2.7) |
a
Non-parametric test.
b
Two-sided test.