Study	Treatment 1	Treatment 2	RR	95% CI lower limit	95% CI upper limit
Cavigelli‐Brunner 2018	Dobutamine	Milrinone	0.9231	0.7851	1.0854
Costello 2014	Milrinone	Placebo	0.7332	0.3393	1.5844
Hoffman 2003	Milrinone	Milrinone LD	0.8542	0.3417	2.1351
Hoffman 2003	Milrinone LD	Placebo	0.8584	0.3593	2.0507
Hoffman 2003	Milrinone	Placebo	0.7332	0.3393	1.5844
Pellicer 2013	Levosimendan	Milrinone	0.9861	0.0644	15.0888
Thorlacius 2020	Levosimendan	Milrinone	0.9861	0.0644	15.0888