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

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

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

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

Unpublished Studies All SRs must search for gray literature Helps address publication bias and outcome reporting bias Publication bias must be assessed in all reviews

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

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)

Standardized Grading Scheme

The Campbell Collaboration The International Secretariat P.O. Box 7004 St. Olavs plass 0130 Oslo, Norway E-mail: info@c2admin.org http://www.campbellcollaboration.org