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Table 2 Overall model fit of the economic-QOL-scale

From: Development of a short scale for assessing economic environmental aspects in patients with spinal diseases using Rasch analysis

Model Chi-square(df) p a Mean item fit residual Unidimensionality t-test PSId
     test %b LB95%CIc  
Original 115.3(44) <0.001 −0.43 9.0 6.5 0.92
Revised 34.8(20) 0.021 −0.04 5.6 3.1 0.88
  1. Notes. a Bonferroni adjusted = 0.01; b percentage significant tests; c lower bound of the 95% confidence interval; d person separation index