From: The effectiveness of interventions to change six health behaviours: a review of reviews
Classification | Type of evidence |
---|---|
1 | Systematic reviews of RCTs |
2 | Systematic reviews of individual, non-RCTs, case-control studies, cohort studies, controlled before-and-after (CBA), interrupted time series (ITS), correlation studies |
1&2 | Systematic reviews of both RCTs and non-RCTs, case-control studies, cohort studies, controlled before-and-after (CBA), interrupted time series (ITS), correlation studies |