Table 4. Univariate and multivariate analysis of potential risk factors for 90 day mortality.

Variable	Univariate analysis OR p-value 95%CI	Multivariate analysis OR p-value 95%CI
Age	1.02 0.021 1.00–1.03	0.99 0.615 0.97–1.02
Surgical 58/124 (46.8%)	1.65 0.026 1.06–2.57	1.34 0.348 0.72–2.52
Sepsis 102/222 (45.9%)	2.21 0.001 1.41–3.47	1.83 0.066 1.02–3.27
Hypertension 61/152 (40.1%)	1.10 0.669 0.72–1.68	1.04 0.874 0.64–1.90
HIV 30/75 (40.0%)	1.07 0.801 0.64–1.80	1.11 0.929 0.44–2.12
AKI stage	1.70 0.015 1.11–2.61	1.31 0.276 0.81–2.11
Dialysis 96/204 (47.1%)	2.24 <0.001 1.45–3.47	0.78 0.865 0.04–13.99
ICU 92/202 (47.5%)	1.89 0.004 1.23–2.93	1.27 0.408 0.72–2.24
Dialysis + ICU 74/145 (51.0%)	2.06 0.001 1.33–3.17	1.60 0.212 0.77–3.34
First SLEDD 38/72	2.04 0.007 1.21–3.44	0.80 0.642 0.32–2.02
First CVVHD 23/89	2.51 0.008 1.28–4.94	2.21 0.179 0.70–7.02
First HD 34/88	0.99 0.972 0.61–1.62	0.74 0.593 0.24–2.24
Mechanical ventilation 58/107	2.76 <0.001 1.69–4.51	2.46 0.019 1.41–4.30
Inotropes 43/84	2.27 0.001 1.37–3.76	1.24 0.618 0.53–2.91
Time to dialysis	1.14 0.073 0.99–1.32	1.93 0.080 0.93–4.03
AKI stage 1 versus stages 2 and 3 combined	1.87 0.047 1.03–3.47	1.20 0.637 0.57–2.60