Table 4.

Item analysis

Item no	Content of the questions1	Location	Outfit mean square	Infit mean square
	Perceived outcome of the treatment
11	Conversation with professional	-0.16	0.9	0.9
12	Overall treatment outcome	0.09	0.8	0.8
13	Change in psychological problem	-0.46	1.5	1.3
	Quality of interaction with the clinician
18	Enough time for contact/dialogue	0.07	1.0	1.0
19	Understanding	-0.44	0.7	0.8
20	Therapy/treatment suitability	0.04	0.7	0.7
21	Follow-up actions carried out	-0.26	0.9	0.9
22	Communication	-0.56	1.1	1.2
	Quality of information provision
23	Patient say in treatment package	0.60	1.2	1.2
24	Treatment options	0.62	1.2	1.1
25	Psychological problems	0.46	1.1	1.1

¹ See additional file 1 for a complete translation of the questions and the response options