Table 1.
Repeated measures ANOVA; OBN and DED predict changes in QIDS-SR over different time points up to 5 weeks.
| Within-subjects effects | F(3, 48) | p | Partial η2 | |
|---|---|---|---|---|
| Time * OBN | Sphericity Assumed | 5.563 | 0.002 | 0.258 |
| Time * DED | Sphericity Assumed | 15.39 | 0.003 | 0.252 |
| Within-subjects contrasts | F(1, 16) | p | Partial η2 | |
| Time * OBN | 1 Day vs. Baseline | 13.143 | 0.002 | 0.451 |
| 1 Week vs. Baseline | 7.237 | 0.016 | 0.311 | |
| 5 Weeks vs. Baseline | 13.29 | 0.002 | 0.454 | |
| Time * DED | 1 Day vs. Baseline | 9.941 | 0.006 | 0.383 |
| 1 Week vs. Baseline | 6.828 | 0.019 | 0.299 | |
| 5 Weeks vs. Baseline | 15.298 | 0.001 | 0.489 | |
Time is the within-subject factor (independent variable), QIDS-SR is the within-subject dependent variable in baseline, 1-day, 1-week, 5-weeks. OBN and DED are independent variables. Time-by-OBN and Time-by-DED interactions are the primary outcomes of interest (within-subjects effects). Within-subjects simple contrasts are calculated for each time point compared to baseline. A significant within-subject contrast suggests a linear relationship between OBN or DED and the difference between time points in QIDS-SR. Sphericity assumed: Mauchly's W = 0.71 (p = 0.411). partial η2 > 0.25 = large effect size. To inform directionality see Figure 1 for Pearson's correlations: high OBN and low DED predict reductions in QIDS-SR.