Table 5.

Logistic regression model: risk factors for AKI (n = 396)

Covariates associated with AKI	Coefficient	Odds ratio	95% Confidence interval	P-value
Maximum SOFA	0.324	1.383	1.267 to 1.509	< 0.001
Proteinuria	1.500	4.480	2.824 to 7.108	< 0.001

SOFA, sequential organ failure assessment

Covariates selected: Age, TBSA, ACS, inhalation injury, vasopressor in the first 48 h, comorbidities, sepsis during ICU stay, maximum SOFA, proteinuria

Variables coding: AKI 1: No occurrence of RIFLE criteria, 2: Occurrence of RIFLE criteria; Proteinuria 1: (-), 2: (±) or (+), 3: ≥ (++)