Table 6 Other potential influences on trial bias
From: Tolerating bad health research (part 2): still as many bad trials, but more good ones too
Risk of bias | ||||
|---|---|---|---|---|
Potential influence | Low | Unclear | High | Total reported |
Statistician involved | 12/45 27% | 5/45 11% | 28/45 62% | 45/140 32% |
Methodological support | 8/20 40% | 4/20 20% | 8/20 40% | 20/140 14% |
Both a statistician and methodological support | 5/11 45% | 2/11 18% | 4/11 36% | 11/140 8% |