From: Performance of mixed effects models in the analysis of mediated longitudinal data
Simulated Data | Mediated SEM | LMM with Mediator as Covariate LMM1 | LMM without Mediator LMM2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Sample Size | Bias (%) | Coverage Probability (%) | Power (%) | Bias (%) | Coverage Probability (%) | Power (%) | Bias (%) | Coverage Probability (%) | Power (%) |
25 | 1.5 | 92 | 26 | -48 | 85 | 14 | 2.1 | 91 | 26 |
50 | 1.5 | 93 | 41 | -49 | 84 | 16 | 2.0 | 93 | 42 |
100 | 1.2 | 94 | 65 | -49 | 75 | 26 | 1.7 | 94 | 65 |
200 | -1.2 | 96 | 91 | -51 | 56 | 41 | -1.1 | 95 | 89 |
250 | -1.6 | 94 | 95 | -52 | 48 | 47 | -1.6 | 93 | 94 |
500 | -1.0 | 95 | 100 | -51 | 21 | 78 | -1.0 | 95 | 100 |