Table 4. Odds ratios (ORs) with 95% confidence interval (CI) on the association between use of hormone replacement therapy and gastric adenocarcinoma stratified by age and tobacco smoking categories.
| Gastric adenocarcinoma | |
|---|---|
| Stratified category | OR (95% CI)a |
| Age (years) | |
| 50–59 | 0.53 (0.25–1.13) |
| (Number of exposed cases/controls) | (16/173) |
| 60+ | 0.38 (0.18–0.84) |
| (Number of exposed cases/controls) | (7/172) |
| Tobacco smoking status | OR (95% CI)b |
| Never | 0.53 (0.26–1.08) |
| (Number of exposed cases/controls) | (11/214) |
| Ever | 0.52 (0.24–1.12) |
| (Number of exposed cases/controls) | (13/107) |
a
Adjusted for calendar year, tobacco smoking, alcohol consumption, body mass index, hysterectomy, and upper gastrointestinal disorders.
b
Adjusted for age, calendar year, alcohol consumption, body mass index, hysterectomy, and upper gastrointestinal disorders.