The Intracluster Correlation Coefficient in Cluster Randomisation¶
Kerry, S. M., & Bland, J. M. (1998). The Intracluster Correlation Coefficient in Cluster Randomisation. BMJ, 316(7142).
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1 citation across 1 artifact.
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Mechanisms¶
- Power Sensitivity Grid
- In clustered designs the parameter that most often does the damage is the intraclass correlation, whose plausible range is wide and whose effect on power is severe, so a grid that pins it at one hopeful value misses the real risk.
This sourceShows that intracluster correlation materially inflates the sample size required by cluster-randomized designs and therefore affects their power.
- In clustered designs the parameter that most often does the damage is the intraclass correlation, whose plausible range is wide and whose effect on power is severe, so a grid that pins it at one hopeful value misses the real risk.
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Registry ID ref:d04703adaca6 · see in the full table