Table 4.
Quality assessment of the six retrieved studies.
| Pellegrini et al33 2009 AJODO | Pandis et al46 2008 Orthod Craniofac Res | van Gastel et al48 2007 Journal of Clinical Periodontology | Pithon et al52 2011 Braz J Oral Sci. | Pejda et al54 2012 Angle Orthod | Pandis et al55 2010 Eur J Orthod | |
|---|---|---|---|---|---|---|
| Type of study | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
| Study description | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Sample size | 1.0 | 1.0 | 1.0 | 0.5 | 1.0 | 1.0 |
| Sample selection description | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Drop out description | 1.0 | 0.5 | 0.5 | 1.0 | 1.0 | 0.5 |
| Measurement method | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Blind study | 0.5 | --- | 0.5 | --- | 0.5 | 0.5 |
| Statistics | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Confounding factors | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Clinical significance | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Scale score (Jadad44) | 10.0 | 9.0 | 9.5 | 9.0 | 10.0 | 9.5 |
| Quality standard assessed | high | high | high | high | high | high |