Table 1. Standardized mortality ratios (SMRs) among 30,199 Swedish patients with reported cases of salmonellosis acquired domestically and abroad, 1997–2003*.
| Time after infection (mo) | Infected domestically (n = 5,139) |
Infected abroad (n = 25,060) |
||||
|---|---|---|---|---|---|---|
| Obs | Exp | SMR (95% CI)† | Obs | Exp | SMR (95% CI) | |
| <1 | 21 | 3.8 | 5.6 (3.4–8.2) | 4 | 7.0 | 0.6 (0.2–1.2) |
| 1–3 | 34 | 7.2 | 4.7 (3.3–6.5) | 19 | 14.2 | 1.3 (0.8–2.0) |
| 4–12 | 55 | 30.3 | 1.8 (1.4–2.3) | 36 | 64.3 | 0.6 (0.4–0.8) |
| >12 | 146 | 107.3 | 1.4 (1.1–1.6) | 215 | 341.2 | 0.6 (0.5–0.7) |
*Obs, observed number of deaths; Exp, expected number of deaths; CI, confidence interval. †p<0.0001.