Exact(7)
It is distribution-free, tractable, consistent and suitable for clustered designs and crossed designs.
In longitudinal studies or clustered designs, observations for each subject or cluster are dependent and exhibit intra-correlation.
With all due respect to the real problems clustered designs present, let's find ways to compromise so we can learn from unbiased but modest-sized studies and go step-by-step toward better information for practice.
For clustered designs, however, one must also inflate the sample size to account for the clustering effect.
38 For clustered designs (such as cluster randomised trials) the reported results in included studies will often be on another level than the level of allocation.
A 2007 systematic review reported weak evidence that this might control dengue 9; none of the studies reviewed used clustered designs, however, despite recognition that mosquitoes fly between households and community mobilization is a group phenomenon.
Similar(53)
The analysis was adjusted for the clustered design.
SUDAAN calculates variance estimates that account for the complex, clustered design of NHANES.
Second, the intervention (hip protection) may work better using a clustered design.
A reliability analysis of the data on individuals was conducted, without adjusting for the clustered design.
The strengths of SMILE include: a large sample, clustered design and relatively high follow-up rates.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com