# Robust variance estimation in meta-regression with dependent effect size estimates.

@article{Hedges2010RobustVE, title={Robust variance estimation in meta-regression with dependent effect size estimates.}, author={L. Hedges and Elizabeth Tipton and M. Johnson}, journal={Research synthesis methods}, year={2010}, volume={1 1}, pages={ 39-65 } }

Conventional meta-analytic techniques rely on the assumption that effect size estimates from different studies are independent and have sampling distributions with known conditional variances. The independence assumption is violated when studies produce several estimates based on the same individuals or there are clusters of studies that are not independent (such as those carried out by the same investigator or laboratory). This paper provides an estimator of the covariance matrix of meta… Expand

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