Table 3.

Estimates of main and interaction effect for the final model across outcomes

	Main effect			Main effect
	Time (log)			Age-group
	Estimate	t(df), p	Cohen’s d	Estimate	t(df), p	Cohen’s d
HTQ	−18.84	t(179.3) = −5.39, <.001	1.97	NS
TSC total	−20.6	t(175.3) = −5.03, <.001	2.01	NS
TSC Negative aff. (NA)	−7.07	t(180.1) = −3.28, <.001	1.55	6,65	t (180) = −2.58, .011
TSC Somatization (Som)	−10.31	t(169.5) = −5.18, <.001	1.83	NS
TSC Dissociation (Dis)	−3.22	t(168.3) = −3.36, <.001	1.43	NS

NS: Statistically nonsignificant. As noted in the Results section, the interaction-effect for age-group was statistically nonsignificant across all outcomes: HTQ: F(1,197.6) = .000, p = .993; TSC: F(1,188.3) = 1.388, p = .240; TSC_NA: F(1,192.2) = 2.068, p = .152; TSC_Som: F(1,186.3) = 0.676, p = .412; TSC_Dis: F(1,186.5) = 0.008, p = .928. The main effect for age-group was statistically non-significant, apart from for TSC_NA: HTQ: F(1,171.9) = 0.305, p = .993; TSC: F(1,188.3) = 1.388, p = .240; TSC_NA_ F(1,180) = 6.65, p = .011, t(180) = – 2.58, p = .011; TSC_Som: F(1,163.2) = 0.025, p = .875; TSC_Dis: F(1,170.4) = .649, p = .422. The interaction-effect for mode of intervention was statistically nonsignificant across all outcomes: HTQ: F(1,172.9) = 2.233, p = .137; TSC: F(1,167.6) = 2.315, p = .130; TSC_NA: F(1,170) = 1.991, p = .160; TSC_Som: F(1,164.2) = 3.674, p = .057; TSC_Dis: F(1,165.8) = 0.435, p = .510. The main effect for mode of intervention was statistically non-significant: HTQ: F(1,145.6) = 0.710, p = .401; TSC: F(1,151.4) = 0.363, p = .548; TSC_NA: F(1,161.6) = 0.140, p = .708; TSC_Som: F(1,142.7) = 1.254, p = .265; TSC_Dis: F(1,152.6) = 0.411, p = .522.