Table 4 Risk of bias in randomized control trials
| Â | Abramsky (2014) [6] | Green (2015) [27] | Gupta (2013) [28] | Hidrobo (2013) [29] | Hossain (2014) [30] | Jewkes (2008) [31] | Kim (2007) [33] | Kim (2009) [34] | Kyegombe (2014) [35] | Pronyk (2006) [37] |
|---|---|---|---|---|---|---|---|---|---|---|
Study design | Â | |||||||||
 Prospective identification of intervention and comparison groups | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Partial1 | Yes | Yes |
 Baseline and follow-up measurement of intervention and comparison groups | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Partial | Yes | Yes |
Selection bias | Â | |||||||||
 Sample size calculation | Yes | Yes | Yes | NR | NR | Yes2 | Yes3 | NR | NR | Yes3 |
 Random sequence generation4 | Yes | Yes + 5 | Yes | Yes | Yes | Yes+ | Yes | Yes | Yes | Yes |
 Allocation concealment | Yes6 | No | No | NR | NR | No | NR | NR | NR | NR |
 Blinding of outcome assessment | NR | NR | No | NR | No | NR | NR | NR | NR | NR |
Detection bias | Â | |||||||||
 Consistent outcome measurement across intervention and comparison groups | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Analysis | Â | |||||||||
 Statistical control for confounding | Yes | Yes | No7 | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
 Intention to treat analysis | Yes | Yes | Yes | Yes | Yes | Yes | NR | NR | Yes | NR |
Reporting bias | Â | |||||||||
 Complete reporting of outcomes described in methods in results | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes |
Reporting bias: conflicts of interest | Â | |||||||||
 Implementation and analysis independent from funders | NR | NR | Yes | NR | NR | NR | Yes | Yes | NR | Yes |
Reporting bias: adherence to recommendations for IPV research | Â | |||||||||
 Age ≥15 for IPV questions | Yes | No | Yes | NR | Yes | Yes | Yes | Yes | NR | NR |
 IPV-specific training for interviewers | Yes | Yes | Yes | NR | Yes | NR | Yes | Yes | NR | Yes |
 IPV referral information or protocols | Yes | NR | Yes | NR | Yes | NR | Yes | NR | Yes | NR |