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. 2024 Jul 22;7:e55786. doi: 10.2196/55786

Table 3.

Difference of score in outcomes, P value, and effect size.

Outcome and evaluation point ICBTa group, mean change (SD) Control, mean change (SD) F test (df=2, 66; ANCOVAb) P value (ANCOVA) Effect size (Hedge g)
LSASc

Baseline to postintervention assessment 16.90 (22.63) 4.16 (17.38) 3.91 .02 0.64

Preintervention to postintervention assessment 14.90 (14.86) N/Ad 4.65 .01 0.66
SPINe

Baseline to postintervention assessment 10.87 (11.40) 2.87 (8.69) 5.39 .007 0.80

Preintervention to postintervention assessment 11.19 (9.33) N/A 7.23 .01 0.93
PHQ-9f

Baseline to postintervention assessment 0.68 (3.36) –0.32 (2.85) 1.19 .31 0.22

Preintervention to postintervention assessment 1.42 (2.98) N/A 2.96 .06 0.49
GAD-7g

Baseline to postintervention assessment 0.29 (2.98) –1.03 (3.17) 1.61 .21 0.09

Preintervention to postintervention assessment 0.97 (2.83) N/A 4.15 .02 0.32
EQ-5D-5L

Baseline to postintervention assessment –0.0299 (0.09) 0.0079 (0.09) 1.61 .21 0.003

Preintervention to postintervention assessment –0.0301 (0.11) N/A 1.41 .25 0.0004

aICBT: internet-based cognitive behavioral therapy.

bANCOVA: analysis of covariance.

cLSAS: Liebowitz Social Anxiety Scale.

dN/A: not applicable.

eSPIN: Social Phobia Inventory.

fPHQ-9: Patient Health Questionnaire-9.

gGAD-7: Generalized Anxiety Disorder-7.