Table 1. Distribution of selected characteristics of gastric cancer patients (cases) and controls.
| Cases (n = 470) | Controls (n = 470) | ||||
| No. | (%) | No. | (%) | P-value* | |
| Sex | 0.385 | ||||
| Male | 330 | (70.2) | 342 | (72.8) | |
| Female | 140 | (29.8) | 128 | (27.2) | |
| Age (years) | 0.553 | ||||
| ≤57 | 253 | (53.8) | 242 | (51.5) | |
| >57 | 217 | (46.2) | 228 | (48.5) | |
| H pyroli infection | <0.0001 | ||||
| Negative | 126 | (26.8) | 215 | (45.7) | |
| Positive | 344 | (73.2) | 255 | (54.3) | |
| Tumor stage† | |||||
| 0 | 6 | (1.3) | |||
| I | 69 | (14.7) | |||
| II | 63 | (13.4) | |||
| III | 117 | (24.8) | |||
| IV | 128 | (27.2) | |||
| Unknown | 87 | (18.5) | |||
*Two-sided χ2 test.
†
According to the UICC Tumor-Node-Metastasis classification for gastric carcinoma (1997).