Table 2. Mean Group Differences and Effect Sizes for Primary and Secondary Outcomes.
Measure | Within-Group Difference, Mean (SE) | Between-Group Effect Size, Cohen d (95% CI) | ||
---|---|---|---|---|
MMB Plus UDC Group | UDC Group | Difference | ||
PHQ-9 score | ||||
Total | −2.65 (0.29)a | −1.70 (0.27)a | 0.95 (0.39)b | 0.23 (0.04 to 0.41) |
Intervention phase | −2.83 (0.24)a | −0.94 (0.22)a | 1.89 (0.32)a | 0.55 (0.36 to 0.73) |
Follow-up phase | 0.19 (0.26) | −0.76 (0.24)c | −0.95 (0.35)c | −0.25 (−0.44 to –0.07) |
PHQ-9 remission (PHQ-9, ≤5) | ||||
Total | 1.23 (0.11)a | 0.86 (0.10)a | −0.37 (0.12)c | −0.28 (−0.46 to –0.09) |
Intervention phase | 1.16 (0.12)a | 0.37 (0.12)c | −0.79 (0.14)a | −0.55 (−0.73 to –0.36) |
Follow-up phase | 0.07 (0.10) | 0.49 (0.10)a | 0.42 (0.14)c | 0.28 (0.10 to 0.47) |
GAD-7 score | ||||
Total | −2.48 (0.31)a | −1.27 (0.29)a | 1.21 (0.42)c | 0.27 (0.09 to 0.45) |
Intervention phase | −2.34 (0.28)a | −0.75 (0.26)c | 1.60 (0.37)a | 0.40 (0.22 to 0.59) |
Follow-up phase | −0.14 (0.30) | −0.53 (0.27) | −0.39 (0.40) | −0.09 (−0.27 to 0.09) |
SF-12 score (PCS) | ||||
Total | −1.86 (0.68)c | −2.39 (0.63)c | −0.53 (0.93) | −0.12 (−0.30 to 0.06) |
Intervention phase | −1.64 (0.57)c | −2.38 (0.53)a | −0.74 (0.78) | −0.06 (−0.24 to 0.12) |
Follow-up phase | −0.22 (0.69) | −0.003 (0.64) | 0.22 (0.94) | −0.05 (−0.23 to 0.13) |
SF-12 score (MCS) | ||||
Total | 10.27 (1.01)a | 5.17 (0.93)a | −5.10 (1.37)c | 0.45 (0.26 to 0.63) |
Intervention phase | 9.78 (0.81)a | 4.11 (0.76)a | −5.67 (1.11)a | 0.54 (0.35 to 0.73) |
Follow-up phase | 0.49 (0.98) | 1.06 (0.90) | 0.57 (1.33) | 0.05 (−0.13 to 0.23) |
Total depression-free daysd | 281.43 (164.99) | 247.46 (158.32) | −33.97 (149.66)c | 0.22 (0.04 to 0.40) |
Abbreviations: GADS-7 indicates Generalized Anxiety Disorder–7; MCS, mental component summary; MMB, Mindful Mood Balance; PCS, physical component summary; PHQ-9, Patient Health Questionnaire–9; SF-12, 12-Item Short Form Survey; UDC, usual depression care.
P < .001.
P < .05.
P < .01.
Data are mean (SD) days.