Table 6

Summary of crude and adjusted odds ratios of death by age strata ≥ 80 years

Age strata

Crude mortality (%)

ICU mortality (odds ratio (95% confidence interval))

Hospital mortality (odds ratio (95% confidence interval))

ICU

Hospital

Crude

Adjusted^a

Crude

Adjusted^b

80 to 84.9 years

11.6

22.4

1.0^c

1.0^c

1.0^c

1.0^c

85 to 89.9 years

13.0

27.0

1.14 (1.02 to 1.27)

1.19 (1.04 to 1.36)

1.28 (1.18 to 1.40)

1.32 (1.20 to 1.46)

≥ 90 years

11.9

29.6

1.03 (0.85 to 1.25)

1.16 (0.93 to 1.46)

1.46 (1.27 to 1.68)

1.71 (1.46 to 2.01)

ICU, intensive care unit. ^aGoodness of fit, P = 1.0; area under the receiver operator characteristic curve = 0.82. ^bGoodness of fit, P = 1.0; area under the receiver operator characteristic curve = 0.80. ^cReference variable.

Bagshaw et al. Critical Care 2009 13:R45   doi:10.1186/cc7768