Dictionary
The Dictionary provides concise definitions of health economics terms, arranged alphabetically for quick reference. Use it to understand unfamiliar terminology or confirm the meaning of a specific term.
B
- Begg TestBegg Rank Correlation Test, Begg and Mazumdar Test
- A statistical test for detecting publication bias in a meta-analysis, based on the rank correlation between effect size and its variance.
C
- Copas ModelCopas Selection Model, Publication Bias Model
- A statistical model adjusting a meta-analysis result for potential publication bias by modelling how publication likelihood depends on results.
E
- Egger TestEgger Regression Test, Funnel-Plot Asymmetry Test
- A statistical test for funnel plot asymmetry, and by extension potential publication bias, using regression of effect estimates against standard errors.
F
- Funnel PlotFunnel Diagram, Precision-Effect Plot
- A scatter plot assessing potential publication bias by plotting each study's effect estimate against its precision, expecting symmetry if unbiased.
- Funnel Plot AnalysisFunnel Plot Assessment, Asymmetry Analysis
- The formal examination of a funnel plot's symmetry, often with a statistical test such as Egger's, to assess likely publication bias.
P
- Publication BiasSmall-Study Effect, Positive-Result Bias
- A systematic distortion in published evidence arising because studies with significant or favourable results are more likely to be published.
- Publication Bias AssessmentPublication-Bias Testing, Small-Study-Effects Test
- An evaluation of whether published evidence is systematically distorted because significant or favourable results are more likely to be published than null ones.
S
- Small Study EffectsSmall-Study Bias, Small Trial Effect
- A pattern in meta-analysis where smaller studies tend to report systematically larger treatment effects than larger studies, possibly reflecting publication bias.
T
- Trim And FillTrim-and-Fill Method, Duval-Tweedie Method
- A method detecting and adjusting for potential publication bias by imputing hypothetical missing studies that would restore funnel plot symmetry.