Skip to main content

Advertisement

Table 1 HDISS-DU score: test-retest reliability in stable patients

From: Psychometric validation of the Hand Disability in Systemic Sclerosis-Digital Ulcers (HDISS-DU®) patient-reported outcome instrument

Definition of stable patientsNumberMean HDISS-DU score (SD)T valuep valueICC [95% CI]
BaselineWeek 4Difference (week 4 − baseline)
Patient-reported global change: ‘no change’ at week 41702.83 (1.14)2.84 (1.14)0.01 (0.55)0.330.73810.88 [0.85–0.91]
Physician-reported global change: ‘no change’ at week 41512.79 (1.10)2.82 (1.09)0.03 (0.58)0.600.54910.86 [0.81–0.89]
Patient-reported severity: identical score at baseline and week 41782.80 (1.07)2.84 (1.09)0.04 (0.52)1.020.30840.89 [0.85–0.91]
Physician-reported severity: identical score at baseline and week 42732.92 (1.10)2.91 (1.09)− 0.01 (0.65)− 0.180.85790.82 [0.78–0.86]
  1. The reproducibility of HDISS-DU scores between baseline and week 4 was assessed in stable patients (defined in four different ways based on patient-reported and physician-reported global assessments) by ICCs and paired t tests
  2. CI confidence interval, DU digital ulcer, HDISS-DU Hand Disability in Systemic Sclerosis-Digital Ulcers, ICC intraclass correlation coefficient, n number of participants, SD standard deviation