Table 3.

Mixed model analyses comparing the differences between the blended acceptance and commitment therapy and cognitive behavioral therapy group over time and between-group effect sizesa.

Outcome		Unstandardized beta coefficient B		SE		t test (df)		P value		Cohen d
GAD-7b
	T0-T1		−3.92		0.26		−15.01 (57)		<.001		N/Ac
	T1-T2		.64		0.28		2.29 (580)		.02		N/A
	T1-T3		−0.23		0.30		−0.78 (20)		.45		N/A
	T0-T1d condition		.18		0.52		0.35 (57)		.73		0.02
	T1-T2d condition		−0.63		0.56		−1.13 (580)		.26		0.15
	T1-T3d condition		−0.33		0.60		−0.54 (20)		.59		0.08
MHC-SFe
	T0-T1		.29		0.05		4.55 (34)		<.001		N/A
	T1-T2		.00		0.06		0.01 (173)		.99		N/A
	T1-T3		−0.06		0.06		−0.90 (71)		.37		N/A
	T0-T1d condition		−0.12		0.13		−0.94 (34)		.36		0.06
	T1-T2d condition		.03		0.12		0.24 (173)		.82		0.03
	T1-T3d condition		.27		0.13		2.13 (71)		.04		0.29
PHQ-9f
	T0-T1		−3.01		0.26		−11.59 (30)		<.001		N/A
	T1-T2		−0.65		0.27		−2.37 (66)		.02		N/A
	T1-T3		−0.69		0.33		−2.12 (42)		.04		N/A
	T0-T1d condition		.31		0.52		0.59 (30)		.56		0.03
	T1-T2d condition		−0.67		0.55		−1.21 (66)		.23		0.16
	T1-T3d condition		−0.53		0.66		−0.80 (42)		.43		0.12
SDSg work
	T0-T1		−1.87		0.27		−6.96 (37)		<.001		N/A
	T1-T3		−.18		0.31		−0.58 (45)		.57		N/A
	T0-T1d condition		.28		0.54		0.53 (37)		.60		0.10
	T1-T3d condition		.64		0.62		1.03 (45)		.31		0.23
SDS social life
	T0-T1		−1.78		0.26		−6.96 (37)		<.001		N/A
	T1-T3		−.15		0.27		−0.55 (27)		.59		N/A
	T0-T1d condition		−.18		0.51		−0.35 (37)		.73		0.07
	T1-T3d condition		0.08		0.55		0.15 (27)		.88		0.03
SDS family and/or home
	T0-T1		−1.93		0.22		−8.78 (44)		<.001		N/A
	T1-T3		−.17		0.26		−0.66 (73)		.51		N/A
	T0-T1d condition		.02		0.44		0.05 (44)		.96		0.00
	T1-T3d condition		−.38		0.51		−0.74 (73)		.46		0.11
CSQ-8h
	T1 Intercept		22.83		0.35		65.20 (34)		<.001		N/A
	T1 Condition		3.19		0.70		4.58 (37)		<.001		0.78
MINI-Plusi (for subgroup without anxiety disorder at baseline)d
	T1 Intercept		−3.47		0.96		−3.60j		<.001		N/A
	T1 Condition		1.28		0.78		1.64j		.10		3.59
	T3 Intercept		−2.38		0.47		−5.09j		<.001		N/A
	T3 condition		.05		0.70		0.07j		.941		1.05
MINI-Plus (for subgroup with anxiety disorder at baseline)d
	T1 intercept		−1.34		0.46		−2.93j		.003		N/A
	T1 condition		.38		0.62		0.61j		.54		1.46
	T3 intercept		−1.39		0.79		−1.75j		.08		N/A
	T3 condition		−1.01		1.08		−0.94j		.35		2.75

^aFor the MINI-Plus and CSQ-8, the condition variable was dummy coded (CBT=0, ACT=1). B is the unstandardized coefficient. T0 stands for baseline; T1 for posttreatment; T2 and T3 for 6- and 12-month follow-up, respectively.

^bGAD-7: Generalized Anxiety Disorder-7.

^cN/A: not applicable.

^dThe presented b-coefficients of logistic mixed model regressions are log-its and effect sizes odds ratios.

^eMHC-SF: Mental Health Continuum-Short Form.

^fPHQ-9: Patient Health Questionnaire-9.

^gSDS: Sheehan Disability Scale.

^hCSQ-8: Client Satisfaction Questionnaire-8.

ⁱMINI-Plus: Mini International Neuropsychiatric Interview-Plus.

^jReported values are z-values.