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Table 2 Standardized mortality ratios (SMR) in age groups 0–14, 15–64 and 65+ years among 16,710 domestically infected Campylobacter cases in Sweden 1997–2003

From: Mortality following Campylobacter infection: a registry-based linkage study

Time after infection Age group (years) Obs* Exp* SMR* (95% CI*)
0–1 months 0–14 1 0.1 8.9 (0.2–32.9)
  15–64 4 2.0 2.0 (0.5–4.3)
  65+ 25 8.3 3.0 (2.0–4.3)
1–3 months 0–14 0 0.2 0 (0–13.5)
  15–64 7 4.1 1.7 (0.7–3.2)
  65+ 24 16.4 1.5 (0.9–2.1)
3–12 months 0–14 3 1.0 3.1 (0.6–7.6)
  15–64 26 18.5 1.4 (0.9–2.0)
  65+ 94 74.4 1.3 (1.0–1.5)
>12 months 0–14 0 2.3 0 (0–1.3)
  15–64 72 75.5 1.0 (0.7–1.2)
  65+ 307 310.7 1.0 (0.9–1.1)
  1. * Obs, observed number of deaths; Exp, expected number of deaths; SMR, standardized mortality ratio; CI, confidence interval