Table 4.

Compliance with the methodological quality items (k = 34).

Quality item	Compliance (%)
1. Sample eligibility criteria 2. Random allocation 3. Allocation concealment 4. Pretest equivalent groups 5. Blinding of assessors 6. Less than 15 % of attrition 7. Intent to treat analysis 8. Absence of reporting bias 9. Validated measurement tools	100 97.1 64.7 85.3 41.2 67.6 82.4 97.1 100