The Campbell Collaboration


Blog topic: Meta-analysis needed to assess how effective programmes are

In a new blog article, Howard White, CEO of Campbell, sheds light on why meta-analysis is needed to evaluate how effective programmes are.

In a recent presentation he mentioned the finding from the Campbell review of Payment for Environmental Services (PES) that such schemes have only a very small effect and are cost ineffective. He was countered by a panelist who said a new review commissioned by EBA in Sweden demonstrated that PES works. "What are readers to think, when there are different systematic reviews giving different conclusions?"


Beirut - the new home of the Global Evidence Synthesis Initiative

A new secretariat for the Global Evidence Synthesis Initiative (GESI) has been established at the American University of Beirut. GESI is an international consortium established to enhance the capacity for research synthesis worldwide. GESI is made up of leading international organizations in evidence synthesis including the Campbell Collaboration; Cochrane; the EPPI-Centre; 3ie; the Alliance for Health Policy and Systems Research; and the Joanna Briggs Institute.


Winners of Campbell grants announced

The Campbell Collaboration is pleased to announce the winners of six grants for new systematic reviews filling policy-relevant evidence gaps. The successful grant holding institutions include the Ottawa Hospital Research Institute (Canada) and the University of Newcastle (Australia). These awards were made possible by the generous support of the American Institutes for Research (AIR). A full list of the grant holders and topics is now available online.


New Plain Language Summaries: Juvenile curfews, supplementary food programmes

The Campbell Collaboration is pleased to announce the publication of two new Plain Language Summaries. The first summarises evidence from a systematic review of the effects of juvenile curfews showing that curfews do not reduce crime or victimization. The second summarizes evidence from a systematic review showing that food supplementation programmes are more effective if better targeted and supervised.