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. 2017 Jun 15;19(6):e213. doi: 10.2196/jmir.6546

Table 3.

Means, standard deviations (SD), effect sizes, and statistical significance for intervention outcomes based on per-protocol sample (nonimputed data).

Outcome Mean (SD) Effect Sizea Statistical Significanceb


Baseline (T0) Post-assessment (T1) Difference (T0−T1) Cohen d (95% CI) F value P value
PHQ-9






Intervention 11.53 (4.35) 6.50 (3.85) −5.03 (3.29) 0.61 (0.15-1.07) 8.98 .04

Control 10.56 (4.53) 7.95 (4.62) −2.61 (4.61)
BDI-II






Intervention 20.07 (7.99) 14.86 (8.05) −5.21 (7.59) 0.25
(−0.18 to 0.65)
0.81 .37

Control 18.78 (9.84) 15.32 (10.34) −3.46 (6.32)
MANSA






Intervention 3.27 (0.72) 3.52 (0.86) 0.25 (0.64) 0.18
(−0.22 to 0.58)
0.34 .56

Control 3.30 (0.85) 3.42 (0.83) 0.12 (0.79)

aBetween-group effect size from mean differences.

bBased on ANCOVA controlling for baseline scores (T0).