Table 3

Evidence Project risk of bias tool for non-randomised studies (all controlled cohort studies)

CitationStudy design includes pre/post intervention dataStudy design includes control or comparison groupStudy design includes cohortComparison groups equivalent at baseline on sociodemographicsComparison groups equivalent at baseline on outcome measuresParticipants randomly selected for assessmentParticipants randomly allocated to the interventionControl for potential confoundersFollow-up rate ≥75%
Cameron et al, 2011NoYesYesYesNANoNo*NoNo
Cover et al15NoYesYesNoNANoNo*YesYes
Cover et al14NoYesYesNoNANoNo*YesYes
  • *Women self-selected into intervention and control groups.

  • NA, not available.