Table 5.

Mediation analysis

	Total effect		Direct effect		Indirect effect		% Mediated
	Adjusted difference (s.e.) (95% CI)	p	Adjusted difference (s.e.) (95% CI)	p	Adjusted difference (s.e.) (95% CI)	p
Mediator = Process Composite at Mid; Outcome = Social Anxiety Composite at Post
iCT v. Wait	1.97 (0.20) (1.58–2.36)	<0.001	0.79 (0.16) (0.48–1.10)	<0.001	−1.17 (0.17) (−1.51 to −0.83)	<0.001	59
CT v. Wait	2.33 (0.20) (1.94–2.73)	<0.001	0.92 (0.17) (0.59–1.26)	<0.001	−1.41 (0.18) (−1.77 to −1.05)	<0.001	60

Notes. N = 34 per condition. Coefficients estimated using linear mixed-effects models, with total, direct, and indirect effects calculated following Baron and Kenny (1986). Models included baseline scores on the mediator and outcome variables as fixed covariates, and a random effect of participant.