Study | Selection | Study design | Confounders | Blinding | Data collection methods | Withdrawals and dropouts | Intervention integrity | Analyses | Global ratings | Final rating |
Abir et al, 201432 | Low | Low | Low | Low | Low | Low | N/A | Low | Low | Low risk |
Emenike et al, 200830 | Low | Low | Low | Low | Low | Low | N/A | Low | Low | Low risk |
Okenwa et al, 201031 | Low | Low | Low | Low | Low | Low | N/A | Low | Low | Low risk |
NA, Not Applicable.