Table 2.
Characteristics of gastric cancer relatives and controls n (%)
| Controls (n = 2842) | Non-gastric cancer relatives (n = 454) | Gastric cancer relatives (n = 261) | P1 | |
| Sex | ||||
| Male | 1258 (44.3) | 190 (41.9) | 105 (40.2) | 0.321 |
| Female | 1584 (55.7) | 264 (58.2) | 156 (59.8) | |
| Age (yr) | ||||
| 40-49 | 1024 (36.0) | 211 (46.5) | 104 (39.9) | < 0.001 |
| 50-59 | 710 (25.0) | 118 (26.0) | 85 (32.6) | |
| 60-69 | 665 (23.4) | 85 (18.7) | 51 (19.5) | |
| ≥ 70 | 443 (15.6) | 40 (8.8) | 21 (8.1) | |
| Education | ||||
| Elementary | 1136 (40.0) | 116 (25.6) | 79 (30.3) | < 0.001 |
| Middle to high school | 1271 (44.7) | 246 (54.2) | 146 (55.9) | |
| University and higher | 435 (15.3) | 92 (20.3) | 36 (13.8) | |
| Marital status | ||||
| Married | 2188 (77.0) | 387 (85.4) | 211 (80.8) | < 0.001 |
| Single | 653 (23.0) | 66 (14.6) | 50 (19.2) | |
| Smoking status | ||||
| Non-smoker | 1588 (57.3) | 260 (59.8) | 152 (59.6) | 0.657 |
| Ex-smoker | 582 (21.0) | 86 (19.8) | 45 (17.7) | |
| Current smoker | 602 (21.7) | 89 (20.5) | 58 (22.8) | |
| Alcohol drinking | ||||
| None | 1524 (55.0) | 241 (55.4) | 145 (56.9) | 0.841 |
| More than once a month | 1248 (45.0) | 194 (44.6) | 110 (43.1) | |
| Income (US $/mo)2 | ||||
| < 1000 | 801 (28.2) | 87 (19.2) | 48 (18.4) | < 0.001 |
| 1000-5000 | 1825 (64.2) | 315 (69.4) | 192 (73.6) | |
| ≥ 5000 | 216 (7.6) | 52 (11.5) | 21 (8.1) | |
| Self-reported health status | ||||
| Good | 873 (30.8) | 149 (33.0) | 82 (31.7) | 0.502 |
| Intermediate | 1017 (35.9) | 171 (37.8) | 96 (37.1) | |
| Bad | 946 (33.4) | 132 (29.2) | 81 (31.3) | |
| Stress | ||||
| Low | 1822 (65.7) | 294 (67.6) | 168 (65.9) | 0.703 |
| Moderate | 770 (27.8) | 120 (27.6) | 73 (28.6) | |
| High | 180 (6.5) | 21 (4.8) | 14 (5.5) | |
1P values were calculated by using a χ2 test;
2
1 US $ = 1000 won.