Research Article
Incidence and Prognostic Factors for Legionnaires' Disease in Denmark 1993–2006
Table 5
Uni- and multivariable analyses of prognostic factors for confirmed, notified cases of Legionnaires’ disease, Denmark 1993–2006. .
| Prognostic factor | No. of cases | No. (%) deaths | Univariable OR for death (95% CI) | Multivariable OR for death (95% CI) |
| Age group | | | | | <40 years | 82 | 6 (7%) | 1 (reference) | 1 (reference) | 40–59 years | 487 | 59 (12%) | 1.7 (0.7–4.2) | 1.8 (0.7–4.5) | 60–69 years | 275 | 56 (20%) | 3.2 (1.3–7.8) | 3.0 (1.2–7.5) | 70–79 years | 199 | 62 (31%) | 5.7 (2.4–14) | 4.5 (1.8–11) | 80+ years | 73 | 33 (45%) | 10 (4.0–27) | 8.3 (3.1–22) | Gender | | | | | Male | 735 | 141 (19%) | 1 (reference) | 1 (reference) | Female | 381 | 75 (20%) | 1.0 (0.8–1.4) | 0.8 (0.6–1.1) | Comorbidity score | | | | | 0 | 296 | 25 (8%) | 1 (reference) | 1 (reference) | 1 | 309 | 46 (15%) | 1.9 (1.1–3.2) | 1.5 (0.9–2.6) | 2 | 220 | 48 (22%) | 3.0 (1.8–5.1) | 2.0 (1.1–3.4) | 3 | 143 | 44 (31%) | 4.8 (2.8–8.3) | 3.4 (1.9–6.0) | 4 | 77 | 26 (34%) | 5.5 (3.0–10) | 3.3 (1.7–6.4) | 5 or more | 71 | 27 (38%) | 6.7 (3.5–12) | 3.5 (1.8–6.9) | Nosocomial | | | | | No | 950 | 155 (16%) | 1 (reference) | 1 (reference) | Yes | 166 | 61 (37%) | 3.0 (2.0–4.3) | 1.6 (1.0–2.3) | Travel-associated | | | | | No | 814 | 194 (24%) | 1 (reference) | 1 (reference) | Yes | 302 | 22 (7%) | 0.3 (0.2–0.4) | 0.4 (0.2–0.6) |
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