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Table 3 SCOPA-AUT subtest Rasch model location and fit statistics (complete cases, n = 225) ordered by location a

From: Novel insights regarding the measurement properties of the SCOPA-AUT

Domains

Location (SE) b

Fit residual c

Chi-square

P-value

Sexual

-0.569 (0.039)

2.085

4.519

0.477

Urinary

-0.48 (0.019)

-1.278

4.776

0.444

Cardiovascular

0.213 (0.045)

0.364

6.686

0.245

Thermoregulatory

0.214 (0.029)

-0.624

12.095

0.034 d

Pupillomotor

0.219 (0.067)

0.286

12.594

0.027 d

Gastrointestinal

0.404 (0.022)

-2.139

12.536

0.028 d

  1. a Excluding people (n = 2) with extreme scores (i.e., those scoring 0 and 69)
  2. b Item locations are expressed in logit values and represent the mean of each item’s response category threshold locations. Negative locations represent less autonomic dysfunction and positive locations represent more autonomic dysfunction
  3. c Standardized fit residuals represent discrepancies between observed and model-expected responses; should range between ± 2.5
  4. d Not significant following Bonferroni correction