Table 3.

Conditional logistic models to examine the relationship between obesity and postoperative AKI with adjustment for potential confounders.

	OR	CI	p-value
BMI Only
<20	0.91	0.49–1.69	0.76
20–30 (reference)	--	--	--
30–35	0.79	0.59–1.06	0.11
≥35	1.65	1.16–2.32	<0.005
BMI and complications excluding hypotension
<20	0.84	0.43–1.67	0.62
20–30 (reference)	--	--	--
30–35	0.87	0.63–1.20	0.40
≥35	1.74	1.19–2.53	<0.005
Bleeding	1.37	1.03–1.82	0.03
Sepsis	4.89	3.08–7.77	<0.005
Cardiac Emergency	2.55	1.62–4.03	<0.005
Cardiac Event	1.89	1.07–3.36	0.03
BMI and complications including hypotension
<20	0.90	0.43–1.88	0.78
20–30 (reference)	--	--	--
30–35	0.88	0.63–1.25	0.49
≥35	1.68	1.11–2.52	0.01
Bleeding	1.21	0.88–1.65	0.24
Sepsis	3.50	2.12–5.79	<0.005
Cardiac Emergency	1.67	1.00–2.81	0.05
Cardiac Event	1.91	1.02–3.57	0.04
Hypotension	5.08	3.48–7.41	<0.005

Bolded odds ratios denote significant results. Controls were matched on age, sex, race, procedure type, estimated glomerular filtration rate (eGFR), emergent and transfer status, previous comorbidity risk score, the admission APACHE score, kidney dysfunction and end-stage kidney disease with fine balance on hospitals.