Table 3 Quality of included studies (Jadad score).
Author | Randomized | Appropriate randomization | Double blind | Appropriate blinding (single blind) | Drop outs appropriately declared | Score |
|---|---|---|---|---|---|---|
Jost | Yes | Yes | No | Yes | Yes | 4/5 |
Baker | Yes | Yes | No | Yes | Yes | 4/5 |
Jacobs | Yes | Yes | No | Yes | Yes | 4/5 |
Wik | Yes | Yes | No | Yes | Yes | 4/5 |