Assumptions for power calculations and effect sizes for MANOVA
| MANOVA assumptions: σ=9.8, α=0.05, R (reliability)=0.85; g=2 groups, 1-β=0.80), M=80/group, two outcomes | Point reduction in the intervention relative to control group (δ) |
| r (correlation between waves)=0.5 | 5.30 (Cohen d=0.54) |
| r=0.6 | 4.75 (Cohen d=0.48) |
| r=0.7 | 4.10 (Cohen d=0.42) |
MANOVA, multivariate analysis of variance.