Table 3.

Model estimates across time-points for each outcome measure from the linear mixed-effects models

Measures of psychiatric symptoms	Baseline		Session 7		Session 14		End of treatment		3-month follow-up
	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE
CY-BOCS	27.65	0.96	24.94	0.96	21.82	0.96	16.51	0.98	16.50	0.96
CGAS	42.16	1.66	45.10	1.71	49.57	1.71	53.82	1.64	54.75	1.66
CHOCI-C total	30.45	2.06	23.04	1.86	25.21	2.36	17.28	2.51	19.69	2.43
CHOCI-C obsessions	14.52	1.16	9.29	1.04	11.85	1.33	10.29	1.42	9.51	1.37
CHOCI-C compulsions	15.71	1.08	13.76	0.99	13.36	1.22	10.09	1.30	10.31	1.26
CHOCI-P total	32.53	2.11	24.63	2.03	24.06	2.64	19.11	2.49	17.78	2.83
CHOCI-P obsessions	16.24	1.14	10.51	1.12	11.94	1.50	9.31	1.37	8.33	1.56
CHOCI-P compulsions	16.43	1.10	14.11	1.06	12.71	1.38	9.77	1.30	9.52	1.48
FAS total	28.85	2.34	27.89	2.37	22.75	2.60	17.84	2.55	17.25	2.64
FAS avoidance	14.80	1.26	13.39	1.28	10.58	1.40	8.33	1.38	8.19	1.43
FAS involvement	14.06	1.23	14.48	1.25	12.16	1.37	9.49	1.35	9.04	1.39
RBQ-2 totala	37.75	2.35	31.79	2.22	–	–	29.81	2.53	30.29	2.69
RBQ-2 repetitive motor Movements	8.90	0.70	6.92	0.66	–	–	5.91	0.73	6.28	0.80
RBQ-2 rigidity/adherence to Routine	14.30	1.10	13.13	1.04	–	–	11.65	1.19	12.56	1.27
RBQ-2 preoccupation/restricted Patterns	12.23	0.78	9.99	0.74	–	–	9.32	0.84	9.48	0.89
RBQ-2 unusual sensory interests	7.26	0.53	5.68	0.50	–	–	5.76	0.56	5.65	0.59
WSAS-Y	20.62	2.04	20.62	1.98	21.12	2.23	15.54	2.22	13.23	2.28
WSAS-P	27.13	1.72	23.68	1.73	20.16	1.92	17.11	1.88	18.05	1.97

CGAS children’s global assessment scale, CHOCI-C children’s obsessional compulsive inventory—child version, CHOCI-P children’s obsessional compulsive inventory—parent version, CY-BOCS children’s Yale-brown obsessive compulsive scale, FAS family accommodation scale, RBQ repetitive behaviours questionnaire, WSAS-P work and social adjustment scale—parent version, WSAS-Y work and social adjustment scale—youth version

^aThe RBQ-2 was not applied at session 14