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The heterogeneity statistic I(2) can be biased in small meta-analyses
BACKGROUND: Estimated effects vary across studies, partly because of random sampling error and partly because of heterogeneity. In meta-analysis, the fraction of variance that is due to heterogeneity is estimated by the statistic I(2). We calculate the bias of I(2), focusing on the situation where t...
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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BioMed Central
2015
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4410499/ https://www.ncbi.nlm.nih.gov/pubmed/25880989 http://dx.doi.org/10.1186/s12874-015-0024-z |