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Research Synthesis Methods2
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Becker, Betsy Jane1
Patsopoulos, Nikolaos A.1
Pavlides, Marios1
Salanti, Georgia1
Thompson, Christopher Glen1
Veroniki, Areti Angeliki1
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The Impact of Multiple Endpoint Dependency on "Q" and "I"[superscript 2] in Meta-Analysis
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Thompson, Christopher Glen; Becker, Betsy Jane – Research Synthesis Methods, 2014
A common assumption in meta-analysis is that effect sizes are independent. When correlated effect sizes are analyzed using traditional univariate techniques, this assumption is violated. This research assesses the impact of dependence arising from treatment-control studies with multiple endpoints on homogeneity measures "Q" and…
Descriptors: Meta Analysis, Effect Size, Correlation, Experimental Groups
Reconstructing 2 X 2 Contingency Tables from Odds Ratios Using the Di Pietrantonj Method: Difficulties, Constraints and Impact in Meta-Analysis Results
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Veroniki, Areti Angeliki; Pavlides, Marios; Patsopoulos, Nikolaos A.; Salanti, Georgia – Research Synthesis Methods, 2013
A problem that is frequently encountered during the systematic review process is when studies that meet the inclusion criteria do not provide the appropriate numerical estimates to include in a meta-analysis. For dichotomous outcomes, a method has been suggested by Di Pietrantonj for reconstructing the 2 × 2 table when the Odds Ratio…
Descriptors: Meta Analysis, Tables (Data), Statistical Analysis, Error of Measurement