“…The mean quality score of the 14 quantitative studies that investigated compliance with the checklist was 7.1/18 and the quality score for the 1 qualitative study 14 was better with 12/24. Ten studies 3,4,14,16,22,37,40,42,43,48 collected data about compliance in real time or in the assessment and 5 studies 30,31,38,39,44 by surveying or interviewing surgical staff members. Whereas 11 studies 3,4,14,16,30,37,40,[42][43][44]48 assessed the overall compliance, only 4 studies 14,37,38,42 assessed the Time Out and 3 studies described failures of compliance of the Time Out 39 or the compliance of different aspects 22 or the compliance and frequency for using a special checklist.…”