Table 1.
Pre and Post-Treatment Means for iCBT vs. Waitlist
| iCBT M (SD) |
Waitlist M (SD) |
t-Tests | |
|---|---|---|---|
| PHQ9 intake | 16.55 (3.99) | 18.22 (4.84) | t = −1.73, p = .09, g = −0.31 |
| PHQ9 week 3 | 11.77 (4.60) | 14.28 (5.35) | t= −2.31, p<.01, g = −0.47 |
| PHQ9 post | 6.45 (4.20) | 14.75 (6.68) | t = −7.16, p < .001, g = −1.59 |
| HRSD intakea | 20.90 (5.20) | 21.57 (5.23) | t = −.57, p = .57, g = −0.13 |
| HRSD post | 9.20 (5.28) | 18.56 (6.96) | t = −6.45, p < .001, g = −1.55 |
| CCTS-SR intake | 90.57 (30.62) | 81.03 (18.17) | t = 1.57, p = .12, g = 0.35 |
| CCTS-SR week 3 | 109.40 (28.34) | 81.67 (24.48) | t = 4.57, p < .001, g = 1.03 |
| CCTS-SR post | 139.11 (27.71) | 82.18 (33.78) | t = 8.50, p<.001, g = 1.89 |
| BADS-SF intake | 20.86 (7.13) | 21.00 (7.92) | t = −.08, p = .93, g = −0.02 |
| BADS-SF week 3 | 28.49 (7.09) | 21.41 (10.47) | t = 3.77, p < .001, g = 0.84 |
| BADS-SF post | 33.08 (7.63) | 23.74 (9.65) | t = 4.98, p < .001, g = 1.11 |
Note. Post-treatment scores use imputed data unless otherwise noted. PHQ9, Patient Health Questionnaire – 9; HRSD, Hamilton Rating Scale for Depression; CCTS-SR, Competencies of Cognitive Therapy Scale – Self Report; BADS-SF, Behavioral Activation for Depression Scale – Short Form; g = Hedges’s g effect size
a
HRSD scores were not imputed. Post-treatment scores represent completers only, iCBT n=45, Waitlist n = 27.