Table 1.

Hypotheses for construct validity

PROMIS CAT	Strong correlation: Pearson's r ≥ 0.7	Moderate correlation: Pearson's r ≥ 0.5–0.7	No strong correlation: Pearson's r ≤ 0.6
Physical Function	SF-12 physical functioning	SF-12 general health	All other SF-12 domains
	SF-12 PCSa	SF-12 bodily pain	DSI total number of symptoms and symptom burden score
Pain Interference	SF-12 bodily pain	SF-12 physical functioning	All other SF-12 domains
		SF-12 PCS	DSI total number of symptoms and symptom burden score
Fatigue	SF-12 vitality		All other SF-12 domains
	DSI feeling tired or lack of energy (1 item)		DSI total number of symptoms and symptom burden score
Sleep Disturbance	DSI sleep problems (2 items)b		All other SF-12 domains
			DSI total number of symptoms and symptom burden score
Anxiety	SF-12 mental health		All other SF-12 domains
	SF-12 MCSaDSI feeling anxious (1 item)		DSI total number of symptoms and symptom burden score
Depression	SF-12 mental health		All other SF-12 domains
	SF-12 MCSa		DSI total number of symptoms and symptom burden score
Ability to Participate in Social Roles and Activities	SF-12 social functioning	SF-12 role physical	All other SF-12 domains
		SF-12 role emotional	DSI total number of symptoms and symptom burden score

^aSF-12 PCS includes the domains physical functioning, role-physical, bodily pain, and general health; SF-12 MCS includes the domains vitality, social functioning, role-emotional, and mental health.

^bDSI Sleep problems were defined as trouble falling asleep and/or trouble staying asleep.