Table 1 Baseline, mid, post-treatment estimated means, standard deviations, MMRM ANOVA, and effect sizes for outcome measures
From: CBT for depression: a pilot RCT comparing mobile phone vs. computer
Pre-treatment | Mid-treatment | Post-treatment | Follow up | Statistic | Effect Size | |||||
|---|---|---|---|---|---|---|---|---|---|---|
Measure | M (SD) (n=35) | M (SD) (n=30) | M (SD) (n=25) | M (SD) (n=23) | Pre to post within group (measurement occasion) | Pre to post between group (time by study group interaction) | Pre to follow up within group (measurement occasion) | Pre to follow up between group (time by study group interaction) | Within-subjects pre- post- treatment comparison for treatment group (95% confidence intervals) | Between group post treatment comparison (95% confidence intervals) |
PHQ-9 Mobile | 14.65 (1.37) | 6.45 (1.51) | 6.55 (1.51) | 5.28 (1.63) | F [2, 51.97] = 33.22, P=<.001 | F [2, 51.97] = 1.09, P=.34 | F [3, 73.6] = 28.4, P=<.001 | F [3, 73.6] = .875, P=.458 | 1.41 (.55-2.26) | −0.47 (−0.47- 0.20) |
PHQ-9 Computer | 14.20 (1.62) | 8.98 (1.24) | 7.21 (1.26) | 7.18 (1.32) | .92 (.19-1.64) | |||||
BDI-II Mobile | 33.46 (2.95) | 12.53 (3.26) | 11.66 (3.47) | F [1, 25.55] = 86.02, P=.<.001 | F [1, 25.55] = .41, P=.52 | F [2, 47.09] = 60.1, P=.<.001 | F [2, 47.0] = 1.7, P=.19 | 1.79 (0.92-2.65) | −0.37 (−1.05- 0.29) | |
BDI-II Computer | 30.90 (2.55) | 13.68 (2.79) | 16.75 (2.85) | 1.88 (1.14-2.62) | ||||||
K-10 Mobile | 30.60 (2.06) | 22.44 (2.21) | 20.03 (2.21) | 19.74 (2.31) | F [6, 153.9] = 24.3,P=<.001) | F [6, 153.9] = .359, P=.90) | F [7, 1734.5] = 28.4, P=<.001) | F [7,174.91] = .370, P=.919) | 1.05 (.20-1.89) | 0.03 (−0.63-0.70) |
K-10 Computer | 30.15 (1.78) | 24.12 (1.86) | 19.95 (1.88) | 19.55 (1.93) | 1.22 (.52-1.92) | |||||
SDS days lost Mobile | 2.20 (.62) | .74 (.42) | ||||||||
SDS days lost Computer | 2.10 (.44) | 1.15 (.37) | ||||||||
SDS days underproductive Mobile | 4.13 (.54) | 2.23 (.71) | ||||||||
SDS days underproductive Computer | 4.25 (.47) | 1.89 (.53) | ||||||||