Fig. 2

Time-of-day at symptom onset and left ventricular ejection fraction (LV-EF). a LV-EF at 6 months. b Improvement of LV-EF compared with baseline values. Data are median with 25th–75th percentiles. Numbers: 0–6 h, n = 120; 6–12 h, n = 138; 12–18 h, n = 103; 18–24 h, n = 109