Table 1.
Included Systematic Reviews and Results for Each of the Relevant AMSTAR Indicators. Where an Item was Unclear in the Text, it was Marked as a ‘no’ in the AMSTAR Database
| Was there Duplicate Study Selection and Data Extraction? | Was a Comprehensive Literature Search Performed? | Was a List of Studies (Included and Excluded) Provided? | Where the Characteristics of the Included Studies Provided? | Was the Scientific Quality of the Included Studies Assessed and Documented? | Was the Scientific Quality of the Included Studies Used Appropriately in Formulating Conclusions? | Were the Methods Used to Combine the Findings of Studies Appropriate? | Was the Likelihood of Publication Bias Assessed? | Was the Conflict of Interest for All Included Studies Stated? | Was there Duplicate Study Selection and Data Extraction? | Was a Comprehensive Literature Search Performed? | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Campbell 2011 | N | Y | N | Y | Y | Y | n/a | N | N | N | Y |
| Carroll 2008a | Y | Y | N | Y | Y | Y | n/a | N | N | N | N |
| Carroll 2008b | Y | Y | N | Y | Y | Y | n/a | N | N | N | N |
| Carroll 2009 | Y | Y | N | Y | Y | Y | n/a | N | N | N | N |
| Cassidy 2008 | Y | N | N | N | Y | N | n/a | N | N | Y | N |
| Hush 2011 | Y | Y | N | Y | Y | Y | Y | N | N | Y | Y |
| Kamper 2008 | Y | Y | Y | Y | Y | Y | Y | N | N | Y | Y |
| McClune 2002 | N | Y | N | N | N | N | n/a | N | N | N | Y |
| McLean 2007 | Y | Y | N | Y | Y | Y | n/a | N | N | Y | Y |
| Scholten-Peeters 2003 | Y | Y | N | Y | Y | Y | n/a | N | N | Y | Y |
| Walton 20091 | N | Y | N | Y | Y | Y | Y | Y | N | N | Y |
| Williams 2007 | Y | Y | N | Y | Y | Y | n/a | N | N | Y | Y |
| Williamson 2008 | Y | Y | N | Y | Y | Y | n/a | N | N | Y | Y |
1
Walton and colleagues updated their meta-analysis during the course of this overview but the update was pending publication. We have indicated the date of publication of their first meta-analysis, but have used results from the updated one where applicable. The scores on the AMSTAR tool are related to the original 2009 publication.