“…The total complication rate was reported in 20 studies [6, 22-26, 33, 35-41, 43-46, 49, 50], ten reported significantly decreased rates (range 34-67 %) [23,33,35,37,38,[43][44][45][46]50] and one reported increased complication rates (25 %) [39]. Mortality rates were reported in 18 studies [6, 22-26, 35, 37, 38, 41, 42, 45-51]; four reported a significant decrease in rates (range 43-100 %) [26,38,45,50], whilst one reported an increase following the implementation of the checklist (238 %) [35].…”