“…Of these studies, 25 described in-hospital mortality 7,14,23,24,29,33,35,36,38–41,15,42,45–47,49,16–22 as the end point, 5 investigated mortality only up to 2 weeks post-event, 25,26,28,37,38 and 11 studies explored longer-term mortality up to 3–6 months. 14,25,52,26,30–32,34,42,44,45 The mortality rate between included studies varied widely—from 7.8% 36 to 70% 28 —among studies where FOUR score was assessed within 24 h of admission. Studies using later time points of FOUR score assessment reported mortality within the above range (Supplementary Table S3).…”