Judgements of acceptability of methods of allocation in a clinical trial context by participant who correctly judged the methods as random or non-random
| Method of allocation | Correctly judging as random (n) | No justification for randomisation | CERES justification for randomisation | Difference 95% CI | ||||
|---|---|---|---|---|---|---|---|---|
| Acceptable | Not acceptable | Acceptable | Not acceptable | |||||
| n (%) | 95% CI | n (%) | n (%) | 95% CI | n (%) | |||
| *Missing data n = 2; †missing data, n = 3; applies to those who gave correct judgements of random allocation methods. | ||||||||
| CI, confidence interval. | ||||||||
| Computer | 110 | 20 (37.7) | 25.9 to 51.2 | 33 (62.3)* | 32 (58.2) | 45.0 to 70.3 | 23 (41.8) | −0.373 to −0.016 |
| Toss coin | 96 | 13 (27.7) | 16.9 to 41.8 | 34 (72.3)† | 15 (32.6) | 20.9 to 47.0 | 31 (67.4) | –0.229 to 0.134 |
| Draw out of hat | 104 | 19 (35.8) | 24.3 to 49.3 | 34 (64.2)* | 17 (34.7) | 22.9 to 48.7 | 32 (65.3) | –0.170 to 0.190 |
| Ask which prefer | 106 | 39 (75.0) | 61.8 to 84.8 | 13 (25.0) | 32 (60.4) | 46.9 to 72.4 | 21 (39.6) | –0.032 to 0.312 |