On composite likelihood in bivariate meta-analysis of diagnostic test accuracy studies

Aristidis K. Nikoloulopoulos ()
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Aristidis K. Nikoloulopoulos: University of East Anglia

AStA Advances in Statistical Analysis, 2018, vol. 102, issue 2, No 4, 227 pages

Abstract: Abstract The composite likelihood is amongst the computational methods used for estimation of the generalized linear mixed model (GLMM) in the context of bivariate meta-analysis of diagnostic test accuracy studies. Its advantage is that the likelihood can be derived conveniently under the assumption of independence between the random effects, but there has not been a clear analysis of the merit or necessity of this method. For synthesis of diagnostic test accuracy studies, a copula mixed model has been proposed in the biostatistics literature. This general model includes the GLMM as a special case and can also allow for flexible dependence modelling, different from assuming simple linear correlation structures, normality and tail independence in the joint tails. A maximum likelihood (ML) method, which is based on evaluating the bi-dimensional integrals of the likelihood with quadrature methods, has been proposed, and in fact it eases any computational difficulty that might be caused by the double integral in the likelihood function. Both methods are thoroughly examined with extensive simulations and illustrated with data of a published meta-analysis. It is shown that the ML method has no non-convergence issues or computational difficulties and at the same time allows estimation of the dependence between study-specific sensitivity and specificity and thus prediction via summary receiver operating curves.

Keywords: Copula mixed model; Diagnostic odds ratio; Generalized linear mixed model; Sensitivity/specificity; SROC (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s10182-017-0299-y

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