Table 3 Allocation concealment and blinding by blinding status of the statistician
Characteristic | Statistician blinded prior to the final analysis | Â | ||
|---|---|---|---|---|
No (N = 83) | Yes (N = 69) | Unknown (N = 27) | Total (N = 179) | |
Allocation concealed, n (%) | ||||
 Yes | 82 (46%) | 69 (39%) | 26 (15%) | 177 |
 Unclear | 1 (50%) | 0 (0%) | 1 (50%) | 2 |
Participants blinded, n (%) | ||||
 No | 52 (44%) | 45 (38%) | 21 (18%) | 118 |
 Yes | 30 (51%) | 23 (39%) | 6 (10%) | 59 |
 Unclear | 1 (50%) | 1 (50%) | 0 | 2 |
Clinician blinded, n (%) | ||||
 No | 56 (46%) | 45 (37%) | 22 (18%) | 123 |
 Yes | 26 (49%) | 22 (42%) | 5 (9%) | 53 |
 Unclear | 1 (33%) | 2 (67%) | 0 | 3 |
Outcome assessor blinded, n (%) | ||||
 No | 23 (51%) | 16 (36%) | 6 (13%) | 45 |
 Yes | 50 (43%) | 48 (41%) | 19 (16%) | 117 |
 Unclear | 10 (59%) | 5 (29%) | 2 (12%) | 17 |