Evidence Project risk of bias tool for non-randomised studies (all controlled cohort studies)
| Citation | Study design includes pre/post intervention data | Study design includes control or comparison group | Study design includes cohort | Comparison groups equivalent at baseline on sociodemographics | Comparison groups equivalent at baseline on outcome measures | Participants randomly selected for assessment | Participants randomly allocated to the intervention | Control for potential confounders | Follow-up rate ≥75% |
| Cameron et al, 2011 | No | Yes | Yes | Yes | NA | No | No* | No | No |
| Cover et al15 | No | Yes | Yes | No | NA | No | No* | Yes | Yes |
| Cover et al14 | No | Yes | Yes | No | NA | No | No* | Yes | Yes |
*Women self-selected into intervention and control groups.
NA, not available.