How useful are Cochrane reviews in identifying research needs?

To determine the extent to which reports of Cochrane reviews recommend the need for further research and, if so, the extent to which they make suggestions regarding that research.We examined all 2535 reviews in Issue 4, 2005 of The Cochrane Library. Each review was categorized on the basis of whether a suggestion was included about specific interventions, participants, or outcome measures that should be included in future research. We also...