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Figure 7 | BMC Medical Research Methodology

Figure 7

From: Comparing denominator degrees of freedom approximations for the generalized linear mixed model in analyzing binary outcome in small sample cluster-randomized trials

Figure 7

The diminished power loss of GLMM Wald F test with Kenward-Roger approximation of denominator degrees of freedom with the increase of cluster number in analyzing CRTs with few heterogeneous clusters. The observed powers and the 95% confidence intervals are calculated from 1000 independent simulation replicates.

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