PROMIS Fatigue short forms are reliable and valid in adults with rheumatoid arthritis

Journal of Patient-Reported Outcomes

Table 4 Correlation of PROMIS fatigue short forms with other PROMIS measures and other clinical disease indicators of RA

PROMIS Fatigue		Physical Function	Participation	Pain Interference	Sleep Disturbance	Anxiety	Depression	TJC28	SJC28	MD	Patient	CDAI	ESR	CRP (mg/L)
7a	r	-0.78	-0.81	0.78	0.65	0.63	0.67	0.34	0.19	0.32	0.59	0.47	0.21*	0.17*
7a	N	546	548	548	546	546	546	345	346	343	547	340	219	254
8a	r	-0.78	-0.78	0.75	0.63	0.60	0.64	0.37	0.21	0.34	0.57	0.50	0.23	0.15**
8a	N	546	548	548	546	546	546	345	346	343	547	340	219	254
4a	r	-0.77	-0.77	0.75	0.65	0.59	0.63	0.37	0.22	0.35	0.56	0.50	0.22	0.15**
4a	N	546	546	546	546	546	546	343	344	341	545	338	219	252