Inclusion scenario | Impact on comprehensiveness of overviews, compared to other inclusion scenarios | Impact on complexity of overviews, compared to other inclusion scenarios |
---|---|---|
Full inclusion scenario (include all Cochrane and non-Cochrane SRs) | Most comprehensive | Most challenging |
First restricted scenario (include only Cochrane SRs) | Least comprehensive | Least challenging |
Second restricted scenario (include all non-overlapping SRs and select the Cochrane SR for groups of overlapping SRs) | Less comprehensive than full inclusion scenario, but often more comprehensive than first restricted scenario | Less challenging than full inclusion scenario, but often more challenging than first restricted scenario |
Third restricted scenario (include all non-overlapping SRs and select the most recent SR for groups of overlapping SRs) | Less comprehensive than second restricted scenario | More challenging than second restricted scenario |
Fourth restricted scenario (include all non-overlapping SRs and select the highest quality SR for groups of overlapping SRs) | Same as second restricted scenario | More challenging than second restricted scenario |