Assessment of the Psychometric Properties of the Danish VISA-P

Table 2

Individual item fit and overall fit to the Rasch model.

	All items		Items 1–6 + 8		Items 1–6		Items 2–6
Individual item fit
	χ^2		χ^2		χ^2		χ^2
Item 1	6.085	0.048	10.218	0.006	14.064	0.0010
Item 2	12.988	0.002	9.189	0.010	5.265	0.072	2.070	0.355
Item 3	5.235	0.073	5.415	0.100	1.388	0.500	1.293	0.524
Item 4	3.893	0.143	3.797	0.150	2.033	0.362	0.278	0.870
Item 5	11.034	0.004	5.833	0.054	4.983	0.083	0.916	0.633
Item 6	11.119	0.004	9.214	0.010	6.142	0.046	0.380	0.830
Item 7	26.322	<0.001
Item 8	3.914	0.141	9.070	0.011
Overall fit
Total item χ^2	80.590		52.738		33.874		4.937
Degrees of freedom	16		14		12		10
Total χ^2 probability	<0.001		<0.001		<0.001		0.895

χ² = Chi Sq,  =  value.  = indicates a significant result at the 5% level.