Data supplements
Online Appendices
Files in this Data Supplement:
- Appendix 1: Search strategy for trials (run as of September 30, 2011)
- Appendix 2: Details of contacting authors
- Appendix 3: Subgroup credibility
- Appendix 4: Risk of bias graph: review authors' judgments about each risk of bias item presented as percentages across all included studies
- Appendix 5: Grade evidence profile
- Appendix 6: Summary of results from subgroup analyses
- Appendix 7: Additional analyses