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Direct linkMaya B. Mathur – Research Synthesis Methods, 2024
As traditionally conceived, publication bias arises from selection operating on a collection of individually unbiased estimates. A canonical form of such selection across studies (SAS) is the preferential publication of affirmative studies (i.e., those with significant, positive estimates) versus nonaffirmative studies (i.e., those with…
Descriptors: Meta Analysis, Research Reports, Research Methodology, Research Problems
Pérez-Bracchiglione, Javier; Meza, Nicolás; Bangdiwala, Shrikant I.; Niño de Guzmán, Ena; Urrútia, Gerard; Bonfill, Xavier; Madrid, Eva – Research Synthesis Methods, 2022
Overlap of primary studies among systematic reviews (SRs) is one of the main methodological challenges when conducting overviews. If not assessed properly, overlapped primary studies may mislead findings, since they may have a major influence either in qualitative analyses or in statistical weight. Moreover, overlapping SRs may represent the…
Descriptors: Literature Reviews, Research Methodology, Research Tools, Research Reports
Pieper, Dawid; Hoffmann, Falk – Research Synthesis Methods, 2022
Cochrane reviews are known to be a high-quality source of evidence synthesis supporting health care decisions. In a recently conducted study, we analyzed the trends in epidemiology and reporting of published systematic reviews over the last 20 years. This sample of 1132 systematic reviews included 84 Cochrane reviews. We have learned several…
Descriptors: Evidence, Health Services, Decision Making, Medical Research
Burns, J.; Polus, S.; Brereton, L.; Chilcott, J.; Ward, S. E.; Pfadenhauer, L. M.; Rehfuess, E. A. – Research Synthesis Methods, 2018
We describe a combination of methods for assessing the effectiveness of complex interventions, especially where substantial heterogeneity with regard to the population, intervention, comparison, outcomes, and study design of interest is expected. We applied these methods in a recent systematic review of the effectiveness of reinforced home-based…
Descriptors: Evaluation Methods, Intervention, Program Effectiveness, Health Services
