Table 2.

Clients’ mean scores at pre- and post-treatment

	M (SD; range)
OQ-45 pre-treatment (N = 4678)	80.47 (22.33; 8-164)
OQ-45 post-treatment (N = 2835)	60.45 (25.92; 2-162)
Effect size d (N = 2469)	0.80 (0.91; -3.61-4.44)
Client satisfaction (N = 3170)	8.19 (1.54; 0–10)
EQ-VAS pre-treatment (N = 3699)	60.11 (20.30; 1-100)
EQ-VAS post-treatment (N = 3378)	71.97 (18.75; 1-100)
Drop-out (N = 547), %	17.1%
Referrals (N = 400), %	11.3%