Fig. 2From: Discrepancy between short-term and long-term effects of bone marrow-derived cell therapy in acute myocardial infarction: a systematic review and meta-analysisImprovement of left ventricular function. Forest plot and meta-analysis of the left ventricular ejection fraction (LVEF) at the 6-month, 1-year, 3-year, and 5-year follow-up. The weighted mean differences were calculated for groups using a random effects model and inverse variance weighting. Inverse variance weighting is a method for aggregating two or more random variables to minimize the variance of the weighted average. a LVEF at 6Â months after treatment. b LVEF at 1Â year. c LVEF at 3Â years. d LVEF at 5Â yearsBack to article page