A generalized formula for converting chi-square tests to effect sizes for meta-analysis.
other · Level V
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- Record sourced from PubMed, PMID 20383281.
- Also identified by DOI 10.1371/journal.pone.0010059 and PMC identifier PMC2850938.
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Abstract
The common formula used for converting a chi-square test into a correlation coefficient for use as an effect size in meta-analysis has a hidden assumption which may be violated in specific instances, leading to an overestimation of the effect size. A corrected formula is provided.