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Table 2 Rasch analysis results

From: Cross-cultural validation of the Educational Needs Assessment Tool in RA in 7 European countries

   Item Fit Residual Person Fit Residual Chi Square Interaction PSI   Independent
T-Tests (CI)
  Analysis Mean SD Mean SD Value (DF) p   N  
UK Analysis1 (initial) 0.34 1.686 -0.269 2.008 442.439 (351) 0.000 0.972 119 0.218 (0.179-0.258)
  Analysis 2 (Subtest) 0.541 0.699 -0.308 1.168 7.116 (7) 0.417 0.947 119 0.068 (0.028 - 0.107)
The Netherlands Analysis1 (initial) 0.294 1.669 -0.393 2.285 130.721 (78) 0.000 0.967 163 0.215 (0.181 -0.249)
  Analysis 2 (Subtest) 0.433 1.365 -0.335 1.235 14.511 (14) 0.412 0.944 153 0.042 (0.006 - 0.078)
Finland Analysis1 (initial) 0.190 1.611 -0.347 2.195 94.144 (39) 0.000 0.961 133 0.215 (0.178 - 0.253)
  Analysis 2 (Subtest) 0.333 1.037 -0.364 1.342 14.977 (14) 0.380 0.900 130 0.078 (0.040 - 0.116)
Norway Analysis1 (initial) 0.171 1.438 -0.393 2.025 73.617 (39) 0.001 0.965 133 0.235 (0.198-0.272)
  Analysis 2 (Subtest) 0.542 0.873 -0.357 1.150 6.053 (7) 0.534 0.919 131 0.056 (0.018-0.094)
Portugal Analysis1 (initial) 0.426 1.355 -0.515 2.624 56.025 (39) 0.038 0.985 114 0.211 (0.171-0.251)
  Analysis 2 (Subtest) 0.309 0.901 -0.449 1.337 2.625 (7) 0.917 0.975 114 0.105 (0.065 - 0.145)
Spain Analysis1 (initial) 0.610 2.531 -0.351 2.485 781.797 (351) 0.000 0.981 187 0.214 (0.183 - 0.245)
  Analysis 2 (Subtest) 0.544 0.854 -0.375 1.293 17.450 (14) 0.233 0.963 186 0.022 (-0.010 - 0.053)
Sweden Analysis1 (initial) 0.307 1.377 -0.248 2.032 93.612 (39) 0.000 0.972 119 0.303 (0.263 - 0.342)
  Analysis 2 (Subtest) 0.406 0.941 -0.322 1.146 5.409 (7) 0.610 0.944 118 0.061 (0.021 - 0.101)
Pooled Analysis1 (initial) 1.018 4.014 -0.552 2.554 977.055 (351) 0.000 0.976 968 0.185 (0.171 - 0.198)
  Analysis 2 (Subtest) 0.847 1.475 -0.466 1.381 71.909 (63) 0.207 0.951 951 0.048 (0.034 - 0.063)
Expected values for a perfect model fit 0 1 0 1   > 0.05 > 0.85   0.05 (or Lower CI <0.05)
  1. SD = Standard deviation, DF = Degrees of freedom, P = Χ2 probability, (significant P = item misfit), PSI = Person
  2. separation index, CI = Confidence intervals