Wim Van den Noortgate Katholieke Universiteit Leuven, Belgium
Belgian Campbell [email protected]
Workshop systematic reviews Leuven June 4-6, 2012
Demonstration software
1. Comprehensive meta-analysis (CMA)
• http://www.meta-analysis.com/A. Running a fixed or random effects meta-
analysisB. Exploring the moderating effect of ‘Weeks’ as
a categorical variableC. Exploring the moderating effect of ‘Weeks’ as
a continuous variableD. Adding data in other formats
1. Comprehensive meta-analysis (CMA)
• http://www.meta-analysis.com/A. Running a fixed or random effects meta-
analysisB. Exploring the moderating effect of ‘Weeks’ as
a categorical variableC. Exploring the moderating effect of ‘Weeks’ as
a continuous variableD. Adding data in other formats
Copy data from Excel to CMA (without variable names)
Double click on ‘B’, give this variable a name and define it as the study identificator
In the same way, define ‘Weeks’ as a categorical
moderator
Defining the g’s as effect sizes
Influential studies?
‘Convergence’ over time? (here not useful)
Publication bias?
1. Comprehensive meta-analysis (CMA)
• http://www.meta-analysis.com/A. Running a fixed or random effects meta-
analysisB. Exploring the moderating effect of ‘Weeks’
as a categorical variableC. Exploring the moderating effect of ‘Weeks’ as
a continuous variableD. Adding data in other formats
1. Comprehensive meta-analysis (CMA)
• http://www.meta-analysis.com/A. Running a fixed or random effects meta-
analysisB. Exploring the moderating effect of ‘Weeks’ as
a categorical variableC. Exploring the moderating effect of ‘Weeks’
as a continuous variableD. Adding data in other formats
1. Comprehensive meta-analysis (CMA)
• http://www.meta-analysis.com/A. Running a fixed or random effects meta-
analysisB. Exploring the moderating effect of ‘Weeks’ as
a categorical variableC. Exploring the moderating effect of ‘Weeks’ as
a continuous variableD. Adding data in other formats
2. R• http://cran.r-project.org/ (R & manuals) • http://www.metafor-project.org/ (metafor &manuals)• Some preliminary notes:
o Type in (or paste) commandso Push ‘Enter’ to runo Use arrow keys to go back to previous commando ##: to include notes that should be ignoredo <-: means ‘equal to’o Control R: to run a selection from a script
• “Save workspace”: saving command history, objects, data, …