Table 2.

Meta-regression analysis of covariates.

Covariates	Studies	Odds Ratio	Lower CI	Upper CI	p Value
VA-ECMO	24	1.23	1.04	1.46	0.02
ECMO duration	7	0.97	0.95	0.98	<0.001
Lactate	7	1.08	0.95	1.24	0.22
Age	9	1.01	0.99	1.03	0.35
Male	10	0.82	0.17	3.94	0.81
Sample size	24	1.00	1.00	1.00	0.73