Table 4.

Logistic regression of the risk of AKI development according to the BMI.

Group	p-value	OR	CI 95
All patients
Normal weight	Reference
Overweight	0.823	1.016	0.887–1.163
Obese	<0.001	1.398	1.177–1.662
APACHE II GROUP 1 (≤13)
Normal weight	Reference
Overweight	0.606	1.069	0.829–1.379
Obese	0.024	1.476	1.054–2.068
APACHE II GROUP 2 (13–20)
Normal weight	Reference
Overweight	0.246	1.179	0.893–1.559
Obese	0.008	1.625	1.138–2.321
APACHE II GROUP 3 (21–26)
Normal weight	Reference
Overweight	0.130	0.795	0.591–1.070
Obese	0.759	1.059	0.733–1.530
APACHE II GROUP 4 (≤27)
Normal weight	Reference
Overweight	0.650	1.065	0.811–1.398
Obese	0.114	1.309	0.938–1.826

APACHE: acute physiology and chronic health evaluation; OR: odds ratio; CI: confidence interval.