Covariate | Cumulative | Incidence rates per two-year period | |||||
---|---|---|---|---|---|---|---|
 | Cases (n = 4,754) | Incidence (5.2 (5.1–5.4)) | 1996/1997 (n = 849) | 1998/1999 (n = 684) | 2000/2001 (n = 926) | 2002/2003 (n = 1,158) | 2004/2005 (n = 1,137) |
Admission category | Â | Â | Â | Â | Â | Â | Â |
   Elective | 544 | 1.7 (1.5–1.8) | 1.4 (1.1–1.7) | 1.0 (0.7–1.3) | 1.5 (1.3–1.8) | 2.4 (2.1–2.8) | 1.8 (1.4–2.1) |
   Nonelective | 4,209 | 7.2 (7.0–7.4) | 7.0 (6.5–7.4) | 6.8 (6.3–7.3) | 7.2 (6.7–7.7) | 7.9 (7.5–8.4) | 7.0 (6.6–7.5) |
Admission type | Â | Â | Â | Â | Â | Â | Â |
   Surgical | 957 | 2.1 (2.0–2.2) | 2.5 (2.2–2.8) | 2.0 (1.7–2.3) | 1.7 (1.4–2.0) | 2.6 (2.3–2.9) | 1.9 (1.7–2.2) |
   Medical | 3,752 | 8.3 (8.0–8.5) | 7.5 (7.0–8.1) | 7.6 (7.0–8.2) | 8.5 (7.9–9.1) | 9.3 (8.7–9.9) | 8.1 (7.6–8.6) |
Surgical subcategory | Â | Â | Â | Â | Â | Â | Â |
   Cardiovascular | 376 | 1.6 (1.4–1.8) | 1.9 (1.5–2.2) | 1.8 (1.4–2.3) | 1.3 (1.0–1.6) | 1.7 (1.4–2.1) | 1.3 (1.0–1.6) |
   Trauma | 72 | 1.7 (1.3–2.1) | 2.9 (1.6–4.2) | 1.6 (0.7–2.4) | 1.4 (0.7–2.1) | 1.5 (0.7–2.2) | 1.7 (0.8–2.6) |
Diagnostic category | Â | Â | Â | Â | Â | Â | Â |
   Sepsis/septic shock | 1,109 | 19.5 (18.5–20.5) | 23.0 (20.0–26.0) | 19.1 (16.0–22.2) | 20.6 (18.1–23.1) | 22.9 (20.6–25.2) | 15.4 (13.8–17.0) |
   Cardiac | 658 | 11.2 (10.4–12.0) | 9.6 (8.0–11.3) | 12.5 (10.3–14.6) | 10.9 (9.0–12.7) | 11.8 (10.0–13.6) | 11.6 (9.9–13.3) |
   Hepatic | 362 | 8.0 (7.2–8.8) | 7.4 (5.6–9.2) | 7.5 (5.5–9.5) | 9.4 (7.3–11.4) | 7.9 (6.1–9.6) | 7.9 (6.5–9.4) |
   Gastrointestinal bleeding | 108 | 6.1 (5.0–7.3) | 4.7 (2.3–7.1) | 5.3 (2.2–8.4) | 5.7 (3.0–8.4) | 8.9 (6.1–11.7) | 5.5 (3.6–7.4) |
Metabolic/poisoning | 191 | 3.9 (3.4–4.4) | 3.1 (1.9–4.2) | 3.3 (2.1–4.6) | 4.2 (2.9–5.5) | 3.9 (2.7–5.1) | 4.5 (3.4–5.7) |
   Respiratory | 383 | 3.4 (3.0–3.7) | 2.7 (2.1–3.4) | 3.0 (2.3–3.8) | 3.7 (3.0–4.5) | 4.2 (3.4–5.0) | 3.1 (2.4–3.8) |
   Neurologic | 101 | 2.1 (1.7–2.5) | 1.9 (1.0–2.8) | 2.0 (1.0–3.1) | 2.1 (1.2–3.0) | 2.0 (1.2–2.9) | 2.3 (1.4–3.1) |