Table 5 Standardised incidence ratios (SIRs) and 95% confidence interval (CI) for gastric cancer among subjects hospitalised for infectious disease, by comorbid conditions associated with exposure to aspirin and other non‐steroid anti‐inflammatory drugs.
| Comorbidity | Observed No cancer cases | SIR (95%CI) |
|---|---|---|
| Rheumatoid arthritis | ||
| No | 633 | 1.09 (1.00–1.17) |
| Yes | 12 | 0.92 (0.47–1.60) |
| Osteoarthritis | ||
| No | 602 | 1.10 (1.01–1.19) |
| Yes | 43 | 0.92 (0.66–1.24) |