Methods Links
The Methods Coordinating Group compiled this listing of useful tools and information portals for Campbell authors and reviews. These online resources feature software and toolkits from collaborators, manuals on systematic review techniques, and recommended guidelines in methods.
Cochrane Handbook for Systematic Reviews of Interventions
The single best Web-based source for doing systematic reviews.
TrialStat! offers software to help organize the systematic review software. *Free for Campbell and Cochrane reviewers. (Note: You may need to click this link twice before the site will open.)
EQUATOR Network (Enhancing the Quality and Transparency of Health Research)
This EQUATOR Network's Web page links to several useful documents including CONSORT, QUORUM, and MOOSE guidelines.
Centre for Reviews and Dissemination (CRD), University of York, UK
The CRK offers guidance for reviewers undertaking a systematic review.
David Wilson's page on "Meta-Analysis Stuff"
David Wilson (George Mason University) provides an Excel spreadsheet for computing a variety of effect sizes; SPSS , Stata, and SAS macros for performing meta-analyses; and PowerPoint slides on a variety of issues related to systematic reviews and meta-analyses.
Will Shadish's page on "Meta-Analysis Links"
Will Shadish (University of California at Merced) offers citations to software for meta-analysis and effect size calculation; also has links to information on conducting meta-analysis with single case designs.
Lee Becker's page of "Effect Size Calculators"
Lee Becker (University of Colorado at Colorado Springs) provides a simple Web-based calculator for computing standardized mean difference effect sizes from means and standard deviations or from t-statistics with degrees of freedom.
School of Health and Related Research, University of Sheffield, UK
This Web page offers links to Internet-based information on conducting all aspects of a systematic review.
What Works Clearinghouse Procedures and Standards Handbook
A guide to thinking about issues involved in interpreting effect sizes is provided by the What Works Clearinghouse. See Part IV, Section E and Appendix B for information on effect size.