Table 4

Relative risk (RR) for in-hospital mortality using Cox proportional hazards model

RIFLE categories

Patient number (%)

RR*

95% CI

P

RIFLE - R

29 (29.6)

1.000

Reference

RIFLE - I

27 (27.6)

2.121

0.913-4.927

0.080

RIFLE - F

20 (20.4)

3.194

1.262-8.085

0.014

* Adjusted for age (≧ 65 years vs < 65 years), cardiac failure (with vs without), pre-RRT SOFA scores, and RRT modality (CVVH vs hemodialysis); CVVH = continuous venovenous hemofiltration; 95% CI = 95% confidence interval; RR = relative risk; RRT = renal replacement therapy; SOFA = Sequential Organ Failure Assessment.

Shiao et al. Critical Care 2009 13:R171   doi:10.1186/cc8147