Table 2.

Logistic regression fitted to assess the association between AKI and in-hospital death

Variables	Odds ratio	95% confidence interval		P-value
		Lower	Upper
(intercept)	0.109	0.099	0.120	< 0.001
AKI grade 1	2.026	1.863	2.203	< 0.001
AKI grade 2	4.290	3.796	4.852	< 0.001
AKI grade 3	5.230	4.903	5.579	< 0.001
SES: LLMIC	2.699	2.509	2.902	< 0.001
SES: UMIC	1.066	0.951	1.194	0.271
Age 65+a	2.838	2.686	2.998	< 0.001
Female	0.895	0.847	0.945	< 0.001
Hypertension	0.944	0.895	0.996	0.035
Temperature [0, 36]	0.935	0.825	1.059	0.292
Temperature [38+]	0.940	0.885	0.998	0.042
Systolic BP [0, 100]	1.126	1.027	1.233	0.011
Systolic BP [140+]	0.996	0.941	1.055	0.9
Heart rate [0, 60]	0.877	0.743	1.033	0.12
Heart rate [100+]	1.129	1.069	1.193	< 0.001
Respiratory rate [0, 12]	1.237	0.837	1.817	0.281
Respiratory rate [20+]	1.047	0.977	1.122	0.193
Oxygen saturation [0, 90]	1.600	1.499	1.708	< 0.001
Oxygen saturation [90 - 95]	1.088	1.0231	1.156	0.007
Mechanical ventilation	1.690	1.586	1.801	< 0.001

AKI, acute kidney injury; BP, blood pressure; LLMIC, low- and low-middle income country; MiCE imputation used for variable missingness; ref, reference; SES, socioeconomic status; UMIC, upper-middle income country.

Multiple imputation by chained equations.

^aReference for age = 18 - 65 years old.