Trajectory of EF measurements
The mean (±SD) time from enrollment to first follow-up EF was 0.99 (±0.24) years and from first to second follow-up EF was 1.39 (±0.43) years. The mean EF was 24.5% (±6.7) at baseline, 31.7% (±11.5) at first follow-up and 32.6% (±12.6) at second follow-up. There was no significant difference in mean EF between ischemic and non-ischemic patients at baseline, first follow-up and second follow-up.