Table 3. Results of mixed effects models: Change in affect during intervention period.
| Variable | Positive affect | Negative affect |
|---|---|---|
| b (SE); [CI] | b (CI); [CI] | |
| Group a | 0.14 (0.29), [-0.43, 0.70] | 0.16 (0.27), [-0.36, 0.68] |
| Time b | ||
| Week 2 | 0.10 (0.28); [-0.46, 0.65] | >-0.01(0.26); [-0.51, 0.51] |
| Week 3 | 0.16 (0.28); [-0.39, 0.72] | -0.04 (0.26); [-0.55, 0.47] |
| Week 4 | 0.20 (0.29); [-0.36, 0.76] | -0.22 (0.26); [-0.73, 0.30] |
| Week 5 | 0.24 (0.29); [-0.33, 0.80] | -0.04 (0.26); [-0.55, 0.48] |
| Week 6 | 0.21(0.29); [-0.35, 0.78] | -0.23 (0.27); [-0.75, 0.28] |
| Group*Time | ||
| Exp./week 2 | 0.03 (0.41); [-0.78, 0.84] | -0.14 (0.38); [-0.88, 0.60] |
| Exp./week 3 | 0.13 (0.42); [-0.68, 0.95] | -0.14 (0.38); [-0.89, 0.60] |
| Exp./week 4 | 0.09 (0.42); [-0.73, 0.91] | -0.04 (0.38); [-0.79, 0.71] |
| Exp./week 5 | 0.12 (0.42); [-0.71, 0.94] | -0.24 (0.39); [-0.10, 0.51] |
| Exp./week 6 | 0.17 (0.42); [-0.66, 1.00] | -0.08 (0.39); [-0.84, 0.68] |
| Estimation (SE) | Estimation (SE) | |
| Random Effects | ||
| Slope SD (Week) c | 1.17 (0.04); [1.09, 1.26] | 1.08 (0.04); [1.01, 1.16] |
b = Regression coefficient; SE = Standard Error; SD = Standard Deviation; CI = Confidence Interval; Pseudo-exp. = Pseudo-experimental group; Exp. = Experimental group
a Reference category: Pseudo-experimental group
b Reference category: Week 1
c Intercept (subject) suppressed