Table 3.

Search strategy. Monitoring performance of sites within multicentre randomised trials: a systematic review of performance metrics

#	Searches
1	Randomised. controlled trial
2	Clinical trial
3	Pragmatic trial
4	Controlled clinical trial
5	1 or 2 or 3 or 4
6	Performance indicator
7	Performance metric
8	Performance measure
9	Enrollment rate
10	Participant enrollment
11	Participant recruitment
12	Quality indicator
13	Quality measure
14	Performance management
15	Assessing site performance
16	Central monitoring
17	Clinical trial monitoring
18	Clinical trial reporting
19	Trial analytics
20	Trial management
21	Site performance
22	Study conduct
23	Trial site performance
24	Benchmarking performance
25	Clinical data management
26	Clinical trial data quality
27	Laboratory sample quality in clinical trials
28	Operational metrics
29	Operational performance
30	Performance evaluation
31	Performance monitoring
32	Performance score
33	Protocol deviations
34	Protocol violations
35	Quality management system
36	Recruitment index
37	Screening logs
38	Strategic project management
39	6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34 or 35 or 36 or 37 or 38
40	39 and 5
41	40 Not (animals/ not humans.sh.)
42	40
43	Limit 42 to English language