|
Methods of randomisation |
|
| Method |
Number of papers (%) |
|
|
|
| Not clear |
199 (64.8%) |
| Random number sheet |
73 (23.8%) |
| Random allocation card |
13 (4.2%) |
| Sealed envelope |
11 (3.6%) |
| Computer allocation |
7 (2.3%) |
| Toss of a coin |
4 (1.3%) |
|
|
|
| Total |
307 (100%) |
Zhang et al. Trials 2008 9:22 doi:10.1186/1745-6215-9-22 |
|