Cited by 359Meta-analysis and systematic reviewsStatistical Methods in Epidemiologyscientometrics and bibliometrics research

Modeling Publication Selection Effects in Meta-Analysis

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Hedges, Larry V.·1992·Statistical Science

Abstract

Publication selection effects arise in meta-analysis when the effect magnitude estimates are observed in (available from) only a subset of the studies that were actually conducted and the probability that an estimate is observed is related to the size of that estimate. Such selection effects can lead to substantial bias in estimates of effect magnitude. Research on the selection process suggests that much of the selection occurs because researchers, reviewers and editors view the results of studies as more conclusive when they are more highly statistically significant. This suggests a model of the selection process that depends on effect magnitude via the p-value or significance level. A model of the selection process involving a step function relating the p-value to the probability of selection is introduced in the context of a random effects model for meta-analysis. The model permits estimation of a weight function representing selection along the mean and variance of effects. Some ideas for graphical procedures and a test for publication selection are also introduced. The method is then applied to a meta-analysis of test validity studies.

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Crossref · 10.1214/ss/1177011364

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Authors
Hedges, L. V.
Corresponding author
Hedges, Larry V.
Venue
Statistical Science
Published
1992-05-01
Volume
7
Issue
2
Pages
246-255
ISSN
  • 0883-4237 (ISSN-L)
  • 2168-8745
OpenAlex
W2087875612
Cited by
359
References
34
Citations by year
2026: 11 · 2025: 15 · 2024: 16 · 2023: 10 · 2022: 16 · 2021: 11 · 2020: 39 · 2019: 17 · 2018: 14 · 2017: 9 · 2016: 11 · 2015: 13 · 2014: 8 · 2013: 5 · 2012: 11
FWCI
10.09
Type
journal article
Language
en
Open access
Locations
  • Statistical Science (publishedVersion)
  • Project Euclid (Cornell University) (submittedVersion)
Topics
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › scientometrics and bibliometrics research
Keywords
publication bias, meta-analysis, p-values, significance level, selection probability, random effects models, weight functions, test validity, graphical procedure

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