136 Chapter 5 Table 4: Summary of the correlation matrix for construct validity assessment in adults with von Willebrand disease. Same PRO, same PROM Same PRO, different PROM* Different PRO, same PROM Different PRO, different PROM PROMIS CATs Reliability coefficient Corr.† Min corr.† Max corr.† Min corr.† Max corr.† Physical function 0.96 0.92 0.39 0.76 0.35 0.74 Pain interference 0.91 0.92 0.50 0.70 0.22 0.69 Fatigue 0.96 0.86 0.51 0.66 0.23 0.69 Anxiety 0.94 0.67 0.41 0.74 0.09 0.58 Depression 0.93 0.71 0.39 0.74 0.17 0.58 Ability to participate in social roles and activities 0.95 0.67 0.51 0.69 0.30 0.67 *CAT physical function was compared with SF-36v2 physical functioning, CAT pain interference was compared with SF-36v2 bodily pain, CAT fatigue was compared with SF-36v2 vitality, CAT anxiety and depression were compared to SF-36v2 mental health, CAT ability to participate in social roles and activities was compared with SF-36v2 social functioning. † Absolute correlations Abbreviations: CATs, Computer Adaptive Tests; corr., correlation; Max, maximum; Min, minimum; PRO, patient-reported outcome; PROM, patient-reported outcome measure; PROMIS, Patient Reported Outcomes Measurement Information System; SF-36v2, Short Form-36 version 2.
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