Table 5.
Review articles selected as per the Oxman and Guyatt criteria.
| Study | Questions and method clearly stated | Comprehensive search methods | Inclusion explicit | Validity of primary studies | Assessment of the primary studies reproducible | Variation in the findings analyzed | Findings of the primary studies combined appropriately | Conclusions supported by the data cited | Overall risk |
| Bardus et al (2015) [7] |
1 | 1 | 1 | 0 | N/Aa | 1 | 1 | 1 | 0.86 |
| Khaylis et al (2010) [8] | 1 | 1 | 1 | 0 | N/A | 1 | 1 | 1 | 0.86 |
| Lyzwinski et al (2014) [4] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1.00 |
aN/A: not applicable.