Table 1.
Distribution of selected characteristics among gastric cancer cases and control in the Shanghai Women’s Health Study
| Characteristics | Cases (n = 153) | Controls (n = 306) |
|---|---|---|
| Age in years, mean (SD) | 58.7 (8.7) | 58.7 (8.6) |
| Fresh Vegetable Intake (g/day) | 270.0 (162.2) | 296.5 (186.9) |
| Fresh Fruit intake (g/day) | 223.1 (161.0) | 252.9 (172.5) |
| Education, n (%) | ||
| College | 9 (5.9) | 30 (9.8) |
| High school | 28 (18.3) | 64 (20.9) |
| Middle school | 39 (25.5) | 83 (27.1) |
| Elementary or less | 77 (50.3) | 129 (42.2) |
| BMI (kg/m2), n (%) | ||
| <25 | 84 (54.9) | 182 (59.5) |
| 25- <30 | 60 (39.2) | 101 (33.0) |
| ≥30 | 9 (5.9) | 23 (7.5) |
| Ever smokers, n (%) | 9 (5.9) | 13 (4.3) |
| Ever exposed to passive smoking, n (%) | 75 (64.7) | 204 (74.2) |
| Ever drank alcohol, n (%) | 3 (1.9) | 4 (1.3) |
| H. pylori positive, n (%)a | 136 (96.5) | 260 (92.2) |
Note: Continuous variables are displayed as means (standard deviation) and frequencies are displayed as counts (percentages).
a
Available on only 423 subjects.