Table 2 Impact of effect size and effect distribution.
From: Performance of mixed effects models in the analysis of mediated longitudinal data
Simulated Data | Mediated SEM | Mixed Model without Mediator | ||||||
|---|---|---|---|---|---|---|---|---|
Effect Size | Effect Distribution | Effect | Bias (%) | Coverage Probability (%) | Power (%) | Bias (%) | Coverage Probability (%) | Power (%) |
Large | Equal | Total | -0.8 | 94 | 100 | -0.8 | 94 | 100 |
| Â | Direct | Total | -0.8 | 94 | 100 | -0.8 | 93 | 100 |
| Â | Indirect | Total | 0.9 | 94 | 100 | -0.6 | 94 | 100 |
Medium | Equal | Total | -1.5 | 94 | 95 | -1.5 | 93 | 94 |
| Â | Direct | Total | -1.5 | 94 | 97 | -1.5 | 93 | 96 |
| Â | Indirect | Total | -1.3 | 94 | 93 | -1.3 | 93 | 92 |
Medium-Small | Equal | Total | -2.0 | 94 | 80 | -2.0 | 93 | 80 |
| Â | Direct | Total | -0.9 | 94 | 84 | -0.9 | 93 | 83 |
| Â | Indirect | Total | -1.8 | 94 | 80 | -1.8 | 93 | 79 |
Small | Equal | Total | -3.7 | 94 | 32 | -3.7 | 93 | 32 |
| Â | Direct | Total | -3.9 | 94 | 36 | -4.0 | 93 | 35 |
| Â | Indirect | Total | -3.7 | 94 | 34 | -3.7 | 93 | 33 |