From: A review of reporting of participant recruitment and retention in RCTs in six major journals
Current stagea | Next stagea | Number of studiesb | Median progressing to next stage | First and third quartiles | Minimum and maximum |
---|---|---|---|---|---|
Invited to eligibility assessment | Attended eligibility assessment | 13 | 70% | 44%, 96% | 15%, 100% |
Attended eligibility assessment | Found to be eligible | 71 | 70% | 49%, 88% | 6%, 100% |
Found to be eligible | Randomised to a treatment arm | 75 | 90% | 77%, 100% | 20%, 100% |
Randomised to a treatment arm | Outcome assessed | 113 | 93% | 86%, 99% | 49%, 100% |
Outcome assessed | Included in analysis | 111 | 100% | 100%, 103%c | 100%, 202%c |