1. Baseline characteristics of cohort.
| Variables | n (%) | P | ||
| Overall | Low risk | High risk | ||
| *, Data are not available for one participant. | ||||
| Participants | 89,914 (100.00) | 47,899 (53.27) | 42,015 (46.73) | |
Age (
) (year)
|
53.83 (8.04) | 53.29 (8.14) | 54.44 (7.87) | <0.001 |
| Sex | 0.110 | |||
| Male | 40,703 (45.27) | 21,564 (45.02) | 19,139 (45.55) | |
| Female | 49,211 (54.73) | 26,335 (54.98) | 22,876 (54.45) | |
| Smoking* | <0.001 | |||
| Never | 73,131 (81.34) | 42,069 (87.83) | 31,062 (73.93) | |
| Ever | 16,782 (18.66) | 5,830 (12.17) | 10,952 (26.07) | |
| Drinking | <0.001 | |||
| No | 77,931 (86.67) | 44,431 (92.76) | 33,500 (79.73) | |
| Yes | 11,983 (13.33) | 3,468 (7.24) | 8,515 (20.27) | |
| Family history of upper gastrointestinal cancer | 8,211 (100.00) | 0 (0) | 8,211 (100.00) | |
| Gastric cancer cases | <0.001 | |||
| No | 89,783 (99.85) | 47,859 (99.92) | 41,924 (99.78) | |
| Yes | 131 (0.15) | 40 (0.08) | 91 (0.22) | |