Table 3.

Intraclass correlation coefficient, range, mean and standard deviation of items and mean and standard deviations of expert ratings for the Therapeutic Adherence Scale (TAS) for Developmentally Adapted Cognitive Processing Therapy (D-CPT)

	Item	ICC(2,2)	Min/Max	M (SD)	Relevance M (SD)	Appropriateness M (SD)
1	Agenda	0.96***	0/2	1.42 (0.78)	2.67 (0.58)	3.00 (0.00)
2	Reviewing previously set homework	0.90***	0/2	1.22 (0.87)	2.67 (0.58)	2.67 (0.58)
3	Reviewing weekly protocol	0.96***	0/2	1.20 (0.91)	2.00 (0.00)	2.67 (0.58)
4	Implementation of intended interventions	0.76***	1/2	1.85 (0.33)	3.00 (0.00)	2.67 (0.58)
5	Phase reference	1.0	1/2	1.87 (0.35)	2.33 (0.58)	2.33 (0.58)
6	Use of treatment materials	0.84***	0/2	1.75 (0.50)	2.33 (0.58)	3.00 (0.00)
7	Cognitive approach and reference to the PTSD disorder model	0.78***	0/2	1.43 (0.61)	3.00 (0.00)	3.00 (0.00)
8	Identification and modification of avoidant behavior	0.84***	0/2	1.77 (0.55)	3.00 (0.00)	2.67 (0.58)
9	Homework setting	0.98***	0/2	1.33 (0.91)	2.00 (0.00)	3.00 (0.00)
10	Time management	0.97***	0/2	1.57 (0.72)	2.00 (0.00)	2.67 (0.58)
	Interventions from different forms of therapy	0.95***	0/2	1.88 (0.41)	2.33 (1.15)	2.00 (0.00)
	Overall session adherence	0.95***	2/6	4.30 (1.24)	2.67 (0.58)	3.00 (0.00)
	Total adherence score	0.95***	8.5/20.0	15.40 (3.17)

Note: ICC_(2,2)=Intraclass correlation coefficients for both raters; Min=lowest score on the ratings on a scale from 0 to 2; and Max=highest score on the ratings on a scale from 0 to 2. Relevance and appropriateness were assessed on a scale ranging from 0 to 3 for each item.

^***p<0.001.