Measure of activity performance of the hand (MAP-Hand) questionnaire: linguistic validation, cultural adaptation and psychometric testing in people with rheumatoid arthritis in the UK

Table 2 Rasch Analysis of the MAP-HAND (n = 340)

	Description	Chi- Square*	Df	P	Residual Item		Residual Person		Person Separation Index [PSI] Reliability	% tests > 5%	95%CI	N
	Description	Chi- Square*	Df	P	Mean	SD	Mean	SD	Person Separation Index [PSI] Reliability	% tests > 5%	95%CI	N
1	MAP-HAND 18	113.17	72	0.001	−0.4073	1.4939	−0.2936	1.1725	0.95	13.4	11.0–15.7	340
2	Four testlet version	19.81	16	0.229	−0.197	2.6078	−0.4561	1.0624	0.92	5.36	3.0–7.8	340
3	Two testlet version	3.0	8	0.934	0.039	1.1792	−0.5832	0.8457	0.92	4.35	1.9–6.8	340
	Ideal Values			> 0.05*		< 1.4		< 1.4	> 0.70	< 5.0	LCI < 5.0

ISSN: 1471-2474