| Study ID and Year | Random Sequencing Generation | Allocation of concealment | Blinding of participants | Blinding of outcome assessment | Incomplete Outcome Data | Selective Reporting | Other Bias |
| Faye et al. (2010) | + | + | ? | ? | + | + | + |
| Kapisi et al. (2015) | + | ? | ? | − | + | + | − |
| Maiga et al. (2015) | + | + | + | + | + | ? | + |
| Nambozi et al. (2011) | + | + | − | + | + | + | + |
| Schramm et al. (2013) | + | + | + | + | + | + | + |
| The 4ABC study Group (2011) | + | ? | ? | ? | + | + | + |
| Whegang et al. (2010) | + | + | ? | ? | + | − | + |
| Yeka et al. (2013) | + | + | − | − | + | ? | + |