Odds ratios (OR) for significant accessory risk factors compared with community controls
| Category | OR | 95% CI |
| Oral corticosteroids | 2.7 | 1.3–4.5 |
| Warfarin | 7.8 | 2.8–21.5 |
| Previous peptic ulcer | 3.8 | 2.6–4.9 |
| Dyspepsia in past year | 4.0 | 3.1–4.8 |
| Heart failure | 5.9 | 2.3–13.1 |
| Diabetes | 3.1 | 1.2–4.3 |
| Current smoking | 1.6 | 1.2–2.0 |
Odds ratios determined by unconditional logistic regression model.
CI, confidence interval.