Table 3.
Quality assessment for randomized clinical trials (Cochrane risk of bias tool) [6]
| Study |
Year of publication |
Random sequence generation | Allocation concealment |
Blinding of participants and personnel |
Blinding of outcome assessment |
Incomplete outcome data | Selective reporting | Other bias |
|---|---|---|---|---|---|---|---|---|
| Siebert et al. [33] | 2015 | High | High | Low | High | Low | Low | Low |
| Lazarovici et al. [34] | 2010 | High | High | Unclear | High | Low | Low | Low |
| Shabestari et al. [36] | 2010 | High | High | Unclear | High | Low | Low | High |
| Bell and Bell [37] | 2008 | High | High | Unclear | High | Low | Low | Low |
| Fugazzotto et al. [38] | 2007 | High | High | Unclear | High | Low | Low | High |
| Jeffcoat [39] | 2006 | High | Low | Low | High | Low | Low | Low |