Study design | Number of studies |
---|---|
Case reports | 2 |
Case series | 5 |
Case–control | 0 |
Cluster intervention | 1 |
Community-based non-randomised trial | 2 |
Controlled trial | 3 |
Cross-sectional | 1 |
Pre-post study | 21 |
Randomised controlled trial (RCT) | 43 |
Randomised triala | 1 |
Survey | 1 |
Total | 80 |