Table 2.

Results of univariable meta-regression analysis

Covariate	Number of studies	Odds ratio	Lower 95% CI	Upper 95% CI	p value
Age	13	0.990	0.979	1.006	0.06
LVEF	8	0.991	0.978	1.002	0.13
Male sex	12	0.512	0.148	1.770	0.29
Lactate	14	0.978	0.926	1.034	0.43
SOFA	14	0.982	0.935	1.031	0.46
CPR	9	0.873	0.385	1.980	0.75
Patients with pneumonia	12	1.078	0.435	2.673	0.87
Publication year	16	1.025	0.970	1.083	0.38

CI confidence interval, CPR cardiopulmonary resuscitation; LVEF left ventricular ejection fraction, SOFA sequential organ failure assessment