1. Systematic Review Approach of the Campbell Collaboration David B
Systematic Review Approach of the Campbell Collaboration David B. Wilson George Mason University

2. Overview of the Campbell Collaboration Coordinating Groups
Crime and Justice
Education
Social Welfare
Methods
Users
Strongly modeled after the Cochrane Collaboration

3. Development of Review Questions
Mostly initiated from research groups
Some topics developed within Campbell and review groups identified
Funders have suggested topics

4. Nonrandomized designs
Quasi-experimental studies frequently included (roughly 75% of reviews)
Must be handled separately in review
Driven by research question and nature of research on topic

5. Unpublished Studies All SRs must search for gray literature
Helps address publication bias and outcome reporting bias
Publication bias must be assessed in all reviews

6. Quality assurance Review groups develop a protocol for the SR
Follows a standardized structure
Peer-reviewed
External substantive experts
Methods group editor and review
Coordinating group editor
Final review
Same as above

7. Funding Review groups must secure their own funding
Campbell Collaboration has some funding that it funnels to selected reviews to help move them along
Not all reviews have funding
Funding usually partial (5k to 50k)

8. Standardized Grading Scheme

9. The Campbell Collaboration The International Secretariat
P.O. Box 7004 St. Olavs plass
0130 Oslo, Norway