Description Usage Arguments See Also Examples
This function returns the power for two-level cluster randomized trials designs with treatment at level 2 (cluster level). It addresses the following models:
Main treatment effects with no additional covariates.
Main treatment effects with covariate(s) at level 1 only.
Main treatment effects with covariate(s) at level 2 only.
Main treatment effects with covariate(s) at levels 1 and 2.
Cluster-level moderator effects with no additional covariates.
Cluster-level moderator effects with covariate(s) at level 2 only.
Individual-level moderator effects with no additional covariates.
Individual-level moderator effects with covariate(s) at level 1 only.
1 2 |
n |
Number of units in level 1 (individual level). |
J |
Number of units in level 2 (cluster level). |
delta |
Standardized effect size. |
rhoL2 |
Intraclass correlation (ICC) at level 2. |
numcovL1 |
Number of covariate(s) at level 1. Default value is |
numcovL2 |
Number of covariate(s) at level 2. Default value is |
R2L1 |
R-squared at level 1. Default value is |
R2L2 |
R-squared at level 2. Default value is |
modL1 |
Existence of moderator at level 1. Default value is |
modL2 |
Existence of moderator at level 2. Default value is |
alpha |
Probability of type I error. Default value is |
1 2 3 4 5 |
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