Study | Comparator/s | Referencea | Studies included | |
---|---|---|---|---|
Buscemi 2006 [9] | One reviewer verification by a second | Two reviewers independently | Extraction by one reviewer and verification by an experienced statistician | N = 30 (6 meta-analysis) |
Horton 2010 [14] | Minimal data extraction experience (n = 28) | Moderate data extraction experience (n = 19) | Substantial data extraction experience (n = 23) | NA |
Minimal systematic review experience (n = 28) | Moderate systematic review experience (n = 31) | Substantial systematic review experience (n = 18) | NA | |
Minimal overall experienceb (n = 26) | Moderate overall experienceb (n = 24) | Substantial overall experienceb (n = 37) | NA | |
Tendal 2009 [15] | Experienced methodologists | PhD students | No reference standard (comparison of raw agreement between reviewers) | 45 (10 meta-analysis) |