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. 2020 Sep 25;22(9):e17831. doi: 10.2196/17831

Table 5.

Effect sizes regarding anxiety symptoms in the subgroup analyses of studies comparing computerized cognitive behavior therapy in adolescents and young adults with active treatment and passive controls at posttreatment.

Variable Ncoma Nparb Effect size Heterogeneity P NNTc
g 95% CI I 2 95% CI
Diagnostic focusd








Anxiety 12 687 0.47e 0.25 to 0.69 34.28 0 to 67 .39 3.85

Depression 6 889 0.23 −0.03 to 0.50 71.68 34 to 88
7.69

Both 6 211 0.33 −0.04 to 0.69 61.89 7 to 84
5.43
Age groupd








Adolescents 13 1031 0.25f 0.06 to 0.44 44.27 0 to 71 .08 7.14

Young adults 11 756 0.51e 0.29 to 0.73 51.47 3 to 76
3.55
Guidanced








Guided 15 958 0.41e 0.21 to 0.61 48.01 5 to 71 .47 4.39

Self-guided 9 829 0.30g 0.07 to 0.53 60.28 17 to 81
5.95
Adherenced








Low 8 894 0.44e 0.19 to 0.68 38.77 0 to 73 .61 4.1

High 11 655 0.27g 0.04 to 0.51 55.6 13 to 77
6.58
Recruitment typed








Clinical 3 267 0.06 −0.34 to 0.46 0 0 to 90 .28 29.41

Community 8 620 0.43f 0.17 to 0.68 58.97 10 to 81
4.2




University/school 13 900 0.40e 0.20 to 0.61 51.22 7 to 74
4.5
Number of modulesd








<5 5 167 0.47g 0.05 to 0.89 68.76 20 to 88 .91 3.85

5-9 12 1051 0.38f 0.16 to 0.60 63.37 32 to 80
4.72

10-14 5 492 0.29 −0.04 to 0.61 12.58 0 to 82
6.17

aNcom: number of comparisons.

bNpar: number of participants.

cNNT: number needed to treat.

dOutlier Sethi (2013) excluded.

eP<.001.

fP<.01.

gP<.05.