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Table 1

From: Trend in the severity of illness and hospital mortality rates of ICU patients over a 10-year period

Year

Predicted death [% (95% CI)]

Observed death [% (95% CI)]

SMR (95% CI)

1995

5.9 (5.6–6.3)

6.8 (6.0–7.8)

1.16(1.01–1.32)

1996

6.6 (6.3–6.9)

7.2 (6.5–7.9)

1.09(0.98–1.20)

1997

7.0 (6.7–7.3)

7.8 (7.1–8.5)

1.11(1.01–1.22)

1998

8.3 (7.9–8.6)

9.2(8.5–10.0)

1.11(1.01–1.21)

1999

9.0 (8.6–9.4)

10.7(9.9–11.7)

1.19(1.09–1.30)

2000

10.8(10.3–11.2)

10.8(9.9–11.8)

1.00(0.91–1.10)

2001

12.4(11.9–12.9)

12.7(11.8–13.7)

1.02(0.94–1.11)

2002

12.9(12.4–13.5)

12.7(11.4–13.4)

0.96(0.88–1.04)

2003

12.8(12.3–13.3)

11.2(10.4–12.2)

0.88(0.81–0.95)

2004

12.1(11.7–12.7)

8.8 (8.0–9.7)

0.73(0.66–0.80)