Standardized Mean Difference (95% Confidence interval) (%)
Outcome measurement
MRI
Echocardiography
LVEF
3.62 (0.71-6.53)
8.02 (5.28-10.77)
Heterogeneity
I
2
=0%
I
2
=45%
Sham injection in the control group
Yes
No
LVEF
6.35 (2.29-10.40)
8.59 (6.49-10.69)
Heterogeneity
I
2
=3%
I
2
=79%
Surgical methods
CABG
OPCAB
LVEF
4.97 (2.87-7.07)
10.30 (7.7-12.90)
Heterogeneity
I
2
=0%
not applicable
LVEF: Left Ventricular Ejection Fraction; MRI: Magnetic Resonance Imaging; CABG: Coronary Artery Bypass Graft; OPCAB: Off-Pump Coronary Artery Bypass Grafting
Table 3:
Subgroup analyses examining the impact outcome measurement, blindness, and surgical methods.
