Table 2.
Assessment of the methodological quality of included studies (randomized controlled trial).
| Citation | Hassel et al., 1982 | Chen et al., 2009 | Vancampfort et al., 2011 | Georgiev et al., 2012 | Wang et al., 2015 | % |
|---|---|---|---|---|---|---|
| Q1. Was true randomization used for assignment of participants to treatment groups? | Y | U | Y | Y | U | 60.00 |
| Q2. Was allocation to treatment groups concealed? | Y | U | U | Y | U | 40.00 |
| Q3. Were treatment groups similar at the baseline? | Y | Y | Y | Y | Y | 100.00 |
| Q4. Were participants blind to treatment assignment? | Y | U | U | U | U | 20.00 |
| Q5. Were those delivering treatment blind to treatment assignment? | Y | U | U | U | U | 20.00 |
| Q6. Were outcomes assessors blind to treatment assignment? | N | U | U | Y | U | 20.00 |
| Q7. Were treatment groups treated identically other than the intervention of interest? | Y | Y | Y | Y | Y | 100.00 |
| Q8. Was follow up complete and if not, were differences between groups in terms of their follow up adequately described and analyzed? | U | N | Y | Y | Y | 60.00 |
| Q9. Were participants analyzed in the groups to which they were randomized? | U | N | N | N | N | 0.00 |
| Q10. Were outcomes measured in the same way for treatment groups? | Y | Y | Y | Y | Y | 100.00 |
| Q11. Were outcomes measured in a reliable way? | U | N | U | U | U | 0.00 |
| Q12. Was appropriate statistical analysis used? | Y | Y | Y | Y | Y | 100.00 |
| Q13. Was the trial design appropriate, and any deviations from the standard RCT design (individual randomization, parallel groups) accounted for in the conduct and analysis of the trial? | Y | Y | Y | Y | Y | 100.00 |
Y = yes; N = no; U = nuclear.