Item analysis using Rasch models confirms that the Danish versions of the DISABKIDS® chronic-generic and diabetes-specific modules are valid and reliable

Table 4 Overview of results for all subscales

Domain	Subscales	Items	Local dependence	DIF	CLR	df	p
Mental	Independence	1–5	Items 1 and 3	Item 5–Age	34.3	33	.41
Mental	Emotion	13–19	None	Item 13–Sex, Item 19–Age	35.3	33	.36
Social	Inclusion	26–31	Items 28 and 29	None	25.0	28	.63
Social	Exclusion	20–25	None	Item 21–Age, Item 22–Age & HBA1C, Item 24–Sex	44.4	42	.37
Physical	Limitation	7–12	None	Item 8–Age	29.2	28	.40
Physical	Treatment	32–37	Item 33 and 35	None	28.8	32	.63
Diabetes module	Impact	1–6	Items 1 and 2	None	39.8	32	.16
Diabetes module	Treatment	7–10	None	Items 7, 9, 10–Age	26.2	38	.93

This overview includes information on the local dependence and DIF for the graphical log linear Rasch models that fit the data. The CLR test is the conditional likelihood ratio test comparing item parameters among children with high or low scores on the subscales

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