Table 1.

Descriptive statistics for treatment groups across time-points

	CBT-Only								FIT Teens
	Baseline (n = 20)		Post Treatment (n = 19)		3-Month Follow-Up (n = 19)		Baseline (n = 20)		Post Treatment (n = 17)		3-Month Follow-Up (n = 17)		Cohen’s dɸ
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Base vs Post	Base vs 3 Month
Pain VAS	6.41	1.59	6.38	2.31	6.26	2.06	6.55	1.22	4.69ᵻ	2.13	4.62*	1.90	0.762	0.770
Functional Disability Inventory	24.45	8.29	23.95	11.04	22.68	9.01	26.70	7.27	18.71ᵻ	4.61	19.76	5.55	0.859	0.632
Childhood Depression Inventory	14.05	6.18	13.79	7.56	12.95	7.55	15.80	6.85	11.71	5.70	11.35	6.52	0.666	0.491
Pain Catastrophizing Scale	24.25	8.46	20.85	10.69	22.0	9.45	30.20	10.56	19.53	7.23	19.65	8.57	0.638	0.733
Tampa Scale of Kinesiophobia	25.5	4.86	23.53	4.39	24.16	5.74	28.35	5.44	23.29	3.89	22.71	5.25	0.555	0.652

Mean scores represent observed values.

^*Statistically significant difference between FIT Teens and CBT for 3-month follow-up vs. baseline change scores

^ᵻStatistically significant difference between FIT Teens and CBT for post-treatment vs. baseline change scores

^ɸEffect sizes for treatment differences between FIT Teens and CBT