Table 2.

Predictors of acute kidney injury by regression analysis

Variable	Exp (B)	95% CI	p value
Univariate analysis
Net fluid balance on the first ICU admission day	1.2	1.1,1.3	<0.001
Net fluid balance on the 2nd ICU admission day	1.02	1.01,1.03	0.11
Net fluid balance on the 3rd ICU admission day	1.02	1.01,1.03	0.027
Percentage of fluid accumulation adjusted for body weight	1.01	1.004,1.018	0.002
Age	1.02	1.01, 1.03	<0.001
CHF	3.1	1.2, 7.9	0.013
APACHE II scores	1.02	1.01, 1.04	0.011
SAPS II scores	1.02	1.007, 1.03	0.002
Admission MAP	0.98	0.96, 0.99	0.008
Vasopressors at admission	2.5	1.5, 4.0	<0.001
Vasopressors at 24 h	2.37	1.48, 3.7	<0.001
Admission serum lactate	1.17	1.03, 1.33	0.014
Colistin	2.52	1.52, 4.18	<0.001
Multivariate analysis
Net fluid balance on the first ICU admission day	1.02	1.01,1.03	0.003
Percentage of fluid accumulation adjusted for body weight	1.009	1.001,1.017	0.02
Vasopressors at 24 h	1.9	1.13,3.19	0.014
Age	1.02	1.01,1.03	0.001
Congestive Heart Failure	3.1	1.16,8.32	0.023
Colistin	2.3	1.3, 4.02	<0.001