Number of participants | Number of trials | Proportion of RCT (%) | |||
---|---|---|---|---|---|
 | RCT | Non-RCT | Total |  | |
≥100,000 | 0 | 2 | 2 | (0.6%) | 0 |
30,000-99,999 | 2 | 4 | 6 | (1.7%) | 33.3 |
10,000-29,999 | 37 | 5 | 42 | (12.2%) | 88.1 |
3,000-9,999 | 56 | 12 | 68 | (19.8%) | 82.4 |
1,000-2,999 | 72 | 33 | 105 | (30.5%) | 68.6 |
< 999 | 76 | 45 | 121 | (35.1%) | 62.8 |
Total | 243 | 101 | 344 | (100%) | 70.6 |