Table 4.

Summary of the correlation matrix for construct validity assessment in adults with von Willebrand disease.

PROMIS computer adaptive tests	Same PRO, same PROM	Same PRO, different PROMa	Different PRO, same PROM		Different PRO, different PROM
	Reliability coefficient	Corr. b	Min corr. b	Max corr. b	Min corr. b	Max corr. b
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, computer adaptive test; corr., correlation; Max, maximum; Min; PRO, patient-reported outcomes; PROM, patient-reported outcomes measures; PROMIS, patient-reported outcomes measurement information system; SF-36v2, Short Form-36 version 2.

^aCAT 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 with SF-36v2 mental health, CAT ability to participate in social roles and activities was compared with SF-36v2 social functioning.

^bAbsolute correlations.