Table 11 Predicted powers for three effect sizes in combination with different cluster sizes and the number of clusters = 40, prevalence rate = 50%, OTE = log(1.68) for a nested exchangeable correlation structure
Magnitude of HTE with I = 40 | method | m | |||||
|---|---|---|---|---|---|---|---|
20 | 40 | 60 | 80 | 100 | 120 | ||
\({\theta }_{3}={\text{log}}\left(1.5\right)\) | GEE | 0.821 | 0.982 | 0.999 | 1.000 | 1.000 | 1.000 |
GEE-KC | 0.809 | 0.979 | 0.998 | 1.000 | 1.000 | 1.000 | |
GEE-MD | 0.797 | 0.976 | 0.998 | 1.000 | 1.000 | 1.000 | |
\({\theta }_{3}={\text{log}}\left(2\right)\) | GEE | 0.998 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
GEE-KC | 0.998 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
GEE-MD | 0.998 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |