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Table 5 Response category measures and fit for 13-items Patient Activation Measure (n = 344)

From: Translation, adaptation and validation of the American short form Patient Activation Measure (PAM13) in a Danish version

Response category Observed count % Observed measure Expected measure Infit MNSQ Outfit MNSQ Treshold
Strongly disagree 51 1 -0.30 -0.80 1.26 1.52 NONE
Disagree 368 10 0.18 0.17 1.03 1.03 -2.31
Agree 2185 58 1.59 1.63 0.91 0.88 -0.93
Agree strongly 1153 31 3.70 3.65 0.96 0.96 3.25
  1. Observed measure: the average of the measures that are model led to produce the responses observed in the category
  2. Expected measure: the expected value of the average measure for this sample
  3. Infit: information-weighted fit statistic
  4. Outfit: outlier-sensitive fit statistic
  5. MNSQ: mean-square statistic with expectation 1.0
  6. Treshold: the calibrated measure of the transition from the category below to this category. The bottom category has no prior transition, and so that the measure