Author | Study question | Study population | All eligible participants enrolled. | Sample size | Intervention clearly described | Outcome measures valid and reliable | Blinding of outcome assessors | Follow-up rate | Statistical analyses | Missing data | Group-level interventions outcome efforts | Quality rating |
Weichel et al. [1] | N | Y | Y | N | Y | Y | N | N | Y | Y | NA | POOR |
Mehta et al. [2] | N | Y | Y | N | Y | Y | N | CD | N | N | NR | POOR |
Kessner and Barak [3] | N | Y | CD | N | Y | Y | N | Y | Y | N | N | FAIR |
Al Taisanet al. [4] | N | Y | Y | N | Y | N | N | Y | N | N | NR | POOR |
Mehboob et al. [5] | N | Y | CD | N | Y | Y | N | Y | Y | N | NA | FAIR |
Stangos et al. [6] | N | Y | CD | N | Y | Y | N | CD | N | N | NR | POOR |
Orlin et al. [7] | N | Y | Y | N | Y | Y | N | N | Y | N | NR | POOR |
Ong et al. [8] | Y | Y | Y | N | Y | Y | N | CD | Y | Y | NR | HIGH |
Kim et al., part 2 [10] | N | Y | Y | N | Y | N | N | CD | N | N | NA | FAIR |
Kim et al., Part 1 [10] | N | Y | Y | N | Y | N | N | CD | N | N | NA | FAIR |
Vangipuram et al. [9] | N | Y | CD | N | Y | N | N | Y | Y | Y | CD | HIGH |