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. 2014 Apr 9;3(4):e109. doi: 10.1038/psp.2014.5

Figure 2.

Figure 2

Boxplot of relative error (RE; %) on estimated fixed effects (top) without covariate effect, random effects (middle), and residual error parameters (bottom) according to scenario 1 or 2, the design, and the estimation algorithms. Boxplots represent the median, quartiles, and 5–95% percentiles. Colors stand for the design and the scenario. For the same color, the dark areas represent the first-order conditional estimation with interaction algorithm and the pale areas denote the stochastic approximation expectation maximization algorithm. Sc., scenario.