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Table 4 Scoring by type of evidence included in the reviews

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