Table 4 Methods of randomisation
From: An assessment of the quality of randomised controlled trials conducted in China
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%) |