Table 1.
Characteristics of study subjects
| Characteristics | Totala | Cases |
Controls | |
| Cardia | Noncardia | |||
| Number | 1621 | 81 | 420 | 1116 |
| Age (mean), years | 67.0 | 64.8 | 68.1 | 66.8 |
| Gender (males, %) | 66.7 | 80.2 | 63.1 | 66.9 |
| Number of siblingsb (mean) | 5.0 | 5.0 | 5.8 | 4.7 |
| Low socioeconomic standard (%) | 58.7 | 63.0 | 49.5 | 61.8 |
| Ever smokers (%) | 49.8 | 54.1 | 52.6 | 48.3 |
| Infected with Helicobacter pylori (%)c | 77.2 | 73.3 | 97.3 | 59.1 |
| Body mass index (median, kg/m2) | 24.5 | 25.1 | 24.7 | 24.4 |
| High salt intake (%) | 25.1 | 25.9 | 28.9 | 23.6 |
| Meals per day (mean) | 3.5 | 3.6 | 3.6 | 3.4 |
| Wine (mean, g/month) | 196.8 | 113.0 | 176.4 | 211.2 |
| Total fruit intake (mean, times/month) | 26.2 | 24.0 | 22.6 | 27.7 |
| Total vegetable intake (mean, times/month) | 37.1 | 33.5 | 34.4 | 38.4 |
| Energy intake (median, kcal/day) | 1655 | 1763 | 1650 | 1648 |
a
Includes all controls (1116) and all cases (505 including 4 cases with cancer subsite unknown).
b
Including him/herself.
c
Based on 267 cases and 237 controls.