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

From: 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

  Description Chi- Square* Df P Residual Item Residual Person Person Separation Index [PSI]
Reliability
% tests > 5% 95%CI N
Mean SD Mean SD
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  
  1. *Bonferroni Adjusted