Table 1.
Select Characteristics of Cases and Controls
| Characteristic | Controls | Cases | p-value |
|---|---|---|---|
| N | 415 | 206 | |
| Sex (% male) | 69.2 | 67.0 | 0.56 |
| Age (mean) | 57.7 | 61.5 | <0.01 |
| Body mass index (mean) | 22.3 | 21.5 | <0.01 |
| Education (%) | |||
| Illiterate | 17.6 | 32.0 | |
| Primary school | 34.2 | 51.9 | |
| Middle school | 29.9 | 14.6 | |
| Senior middle school | 15.9 | 1.0 | |
| Bachelor or higher degree | 2.4 | 0.5 | <0.01 |
| Cigarette smoking (% ever) | 47.6 | 54.2 | 0.12 |
| Pack-years (mean) | 23.6 | 27.4 | 0.01 |
| Alcohol drinking | |||
| Never | 50.2 | 55.2 | |
| Occasionally | 17.5 | 15.4 | |
| Often | 18.2 | 15.9 | |
| Everyday | 14.1 | 13.4 | 0.70 |
| Very hot foods eating habits | |||
| Scalding | 7.3 | 15.1 | |
| Hot | 56.0 | 49.3 | |
| Moderate | 34.2 | 32.7 | |
| Cool | 2.4 | 3.0 | 0.03 |
| H. pylori (% CagA+) | 31.2 | 35.3 | 0.32 |
| Green tea drinking (% ever) | 45.6 | 32.1 | <0.01 |