Table 3.

Adolescent treatment outcome variables at pre-treatment, post-treatment, 3- and 6-month follow-up

Outcome	Pre-treatment	Post-treatment	3-mo f-u	6-mo f-u	Pre- to post-treatment		Post- to 3-mo f-u		3-mo f-u- to 6-mo f-u		Pre to to 6-mo f-u
Count- data	Median (IQR)	Median (IQR)	Median (IQR)	Median (IQR)	Z	% change [95% CI]	Z	% change [95% CI]	Z	% change [95% CI]	Z	% change [95% CI]
DSHI-9-f	9 (3–15)	2 (0–8)	0 (0–3)	1 (0–6)	3.43***	55 [29–72]	3.34***	52 [26–69]	−1.35	−44 [− 144–15]	3.95***	69 [45–83]
Continuous	Mean (SD)	Mean (SD)	Mean (SD	Mean (SD)	Z	Cohen’s d [95% CI]	Z	Cohen’s d [95% CI]	Z	Cohen’s d [95% CI]	Z	Cohen’s d [95% CI]
DSHI-9-v	2.2 (1.2)	1.4 (1.3)	0.8 (1.0)	0.9 (1.0)	2.33*	0.63 [0.54,0.77]	2.97**	0.54 [0.47,0.66]	−0.36	−0.06 [−0.5,-0.08]	4.73***	1.11 [0.96,1.35]
DERS	125.6 (20.1)	110.6 (27.2)	101.3 (23.3)	99.7 (26.8)	3.14**	0.75 [0.59,0.90]	2.07*	0.39 [0.31,0.47]	0.34	0.06 [0.05,-0.08]	4.40***	1.20 [0.95,1.44]
AAQ	31.4 (9.3)	29.0 (9.8)	27.8 (7.8)	27.6 (9.3)	2.28*	0.27 [0.22,0.31]	0.42	0.06 [0.05,0.07]	0.21	0.03 [0.03,-0.04]	2.07*	0.36 [0.30,0.43]
BPFSC	67.1 (12.9)	67.3 (13.9)	65.0 (14.1)	64.4 (12.2)	0.16	0.02 [0.02,0.03]	1.73	0.18 [0.15,0.20]	0.23	0.03 [0.02,-0.04]	1.51	0.23 [0.19,0.27]
CGAS	52.4 (7.1)	60.0 (9.8)	64.6 (8.3)	63.2 (10.6)	3.79***	1.01 [0.77,1.32]	3.76***	0.53 [0.40,0.70]	0.51	−0.10 [−0.14,-0.08]	4.59***	1.44 [1.09,1.88]

Note. Count data. Test statistics are based on generalized estimation equation models using either a negative binomial or normal distribution for count and continuous data, respectively. Confidence intervals for effect sizes are based on 5000 bootstrap replications

Abbreviations: AAQ acceptance and action questionnaire, BPFSC borderline personality feature scale for children, CGAS Children’s Global Assessment Scale, DERS difficulties in emotion regulation scale, DSHI-9-f deliberate self-harm inventory – frequency past month, DSHI-9-v deliberate self-harm inventory – versatility past month

^*p < .05; ^**p < .01; ^***p < .001