| Criteria | Sperber et al (2001)13 | Fabbriciani et al (2004)14 | Bottoni et al (2006)15 | Netto NA et al (2012)16 | Mohatadi et al (2014)17 |
|---|---|---|---|---|---|
| Were eligibility criteria clearly specified | yes | yes | yes | yes | yes |
| Random allocation of subjects | yes | yes | yes | yes | yes |
| Concealment of allocation | Yes | yes | yes | yes | yes |
| Similarity in groups regarding baseline characteristics | yes | yes | yes | yes | yes |
| Blinding of all subjects | no | no | no | no | no |
| Blinding of all clinicians | no | no | no | no | yes |
| Blinding of all assessors | no | no | yes | no | no |
| Adequate follow up | yes | yes | yes | yes | yes |
| Intention to treat analysis | no | no | no | no | yes |
| Reporting of statistical results between groups | yes | yes | yes | yes | yes |
| Provision of point measure and measures of variability | yes | yes | yes | yes | yes |
| Total score | 7 | 8 | 9 | 7 | 9 |