Table 1.

Quality rating of review using AMSTAR

Study	1. Priori design provided	2. Duplicate study selection & data extraction	3. Comprehensive literature search	4. Status of publication an inclusion criteria	5. List of studies provided (Included &Excluded)	6. Characteristics of studies provided	7. Scientific quality of studies assessed	8. Scientific quality used appropriately in formulating conclusions	9. Appropriate methods used to combine study findings	10. Likelihood of publication bias assessed	11. Conflict of interest included	Overall Quality rating
Borque et al. [6]	✓	✓	✓	×	×	✓	✓	✓	✓	✓	×	8/11 (moderate)
Das Munshi et al. [16]	✓	×	✓	×	×	✓	✓	×	✓	✓	×	6/11 (moderate)
Nilaweera et al. [19]	✓	×	✓	×	×	✓	✓	×	×	×	×	4/11 (low)
Cantor Graee & Selten [8]	✓	×	×	×	×	✓	×	×	✓	×	×	3/11 (low)
Lindert et al. [9]	✓	×	×	×	×	✓	×	×	✓	×	×	3/11 (low)
Fazel et al. [17]	×	×	×	×	×	✓	×	×	✓	×	×	2/11 (low)
Bronstein and Montgomery [15]	✓	×	✓	✓	×	✓	✓	✓	×	×	×	6/11 (moderate)
Slewa-Youghan et al. [18]	×	✓	✓	×	×	✓	✓	×	×	×	×	4/11 (low)