Figure 1. Association between the number of patients (sample size) and weighted mean difference in the left ventricular ejection fraction (EF) between cell-based treatment and controls in meta-analyses of intracoronary cell therapy in patients with recent acute myocardial infarction.
A, Sample size (blue columns) and changes in EF from baseline to follow-up (differences between cell-treated and controls) (red columns). B, Correlation between sample size and mean difference in EF between cell-based treatment and control groups.
