FIGURE 2.

Ratio of total sample size required for testing HTE vs OTE as a function of the cluster size m, covariate ICC ρ_x, adjusted outcome ICC ρ_y|x, and ratio of detectable effect sizes (RDES), assuming ${\sigma }_x^2={\sigma }_{y\mid x}^2=1$, β₂ = β₃ = 0.5, and W = 1/2