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Table 1 Maximal difference of the averaged item locations and associated p-value for each item of the three dimensions studied, and for the variables gender, age, region and year of survey

From: Spatio-temporal Rasch analysis of quality of life outcomes in the French general population. Measurement invariance and group comparisons

   Gender Age Region Year of survey
   Diff* p$ Diff* p$ Diff* p$ Diff* p$
General Health GH1 - 0.77 0.70 0.0055 - 0.98 - 0.23
GH11a - 0.20 1.01 0.0049 - 0.95 - 0.14
GH11b - 0.80 - 0.084 - 0.77 - 0.38
GH11c - 0.065 - 0.39 - 0.14 - 0.38
GH11d - 0.18 - 0.71 - 0.19 - 0.50
Physical Functioning PF12 - 0.84 - 0.97 - 0.90 - 0.10
PF3 0.60 0.005 - 0.26 - 0.51 0.16 0.0264
PF45 - 0.84 - 0.87 - 0.79 0.17 0.0418
PF6 - 0.97 0.41 0.0498 - 0.90 - 0.070
PF789 - 0.56 - 0.067 - 0.81 - 0.14
PF10 - 0.23 - 0.99 - 0.99 - 0.23
Mental Health MH1 - 0.89 0.77 0.0003 - 0.86 - 0.89
MH2 - 0.68 - 0.93 - 0.99 - 0.13
MH3 - 0.88 - 0.56 - 0.51 - 0.22
MH4 - 0.35 - 0.71 - 0.99 - 0.95
MH5 - 0.21 - 0.18 - 0.48 - 0.19
  1. * : maximal difference in absolute value between the estimated locations for each item between two levels of the variable studied.
  2. $ : p-value associated to the maximal difference between the estimated locations for each item between two levels of the variable studied.