Assignment to intervention (the ‘intention-to-treat’ effect), total number of studies = 14 | ||||||
---|---|---|---|---|---|---|
Risk level(%) | Randomisation process | Deviations from intended interventions | Missing outcome data | Measurement of the outcome | Selection of the reported result | Overall bias |
Low risk | 68.8 | 75 | 68.8 | 43.8 | 81.3 | 43.8 |
Some concerns | 25 | 25 | 31.3 | 43.8 | 18.8 | 43.8 |
High risk | 6.3 | 0 | 0 | 12.5 | 0 | 12.5 |