Table 1.
Baseline demographic characteristics of the gastric cancer cases and matched controls in the Shanghai Men’s Health Study, 2002–2009
| Cases (n=226) | Controls (n=451) | |
|---|---|---|
| Mean age, y ± SD | 62.6 ± 9.5 | 62.7 ± 9.3 |
| Mean BMI, kg/m2 ± SD | 23.5 ± 3.1 | 24.0 ± 3.3 |
| Marital status, n (%) | ||
| Married | 195 (96.5) | 390 (97.5) |
| Not married (single/widowed/divorced) | 7 (3.5) | 10 (2.5) |
| Smoking status, n (%) | ||
| Never smoker | 59 (26.1) | 152 (33.7) |
| Former smoker | 37 (16.4) | 81 (18.0) |
| Current smoker | 130 (57.5) | 218 (48.3) |
| Alcohol drinking status, n (%) | ||
| Never drinker | 137 (60.6) | 292 (64.8) |
| Former drinker | 14 (6.2) | 15 (3.3) |
| Current drinker | 75 (33.2) | 144 (31.9) |
| Regular physical activity, n (%) | 107 (47.4) | 206 (45.7) |
| Highest education level achieved, n (%) | ||
| Elementary school or less | 22 (9.8) | 57 (12.8) |
| Junior High School | 96 (42.9) | 153 (34.4) |
| High School | 62 (27.7) | 141 (31.7) |
| Professional high education or above | 44 (19.6) | 94 (21.1) |
| Monthly per capita income, n (%) | ||
| < 500 yuan | 21 (9.3) | 48 (10.6) |
| 500 – < 1,000 yuan | 119 (52.7) | 224 (49.7) |
| 1,000 – < 2,000 yuan | 69 (30.5) | 137 (30.4) |
| ≥ 2,000 yuan | 17 (7.5) | 42 (9.3) |
| Occupation, n (%) | ||
| Professional | 62 (27.4) | 142 (31.6) |
| Clerical | 48 (21.2) | 97 (21.6) |
| Manual | 116 (51.3) | 211 (46.9) |
| Mean fruit intake, g/day ± SD | 65.4 ± 68.5 | 77.5 ± 72.1 |
| Family history of gastric cancer, n (%) | 19 (8.4) | 35 (7.8) |
| Regular aspirin use, n (%) | 19 (8.4) | 63 (14.0) |
| Diagnosis of chronic gastritis, n (%) | 57 (25.2) | 80 (17.7) |
Abbreviation: SD, standard deviation