Table 2.

Items used for PROMIS-29 summary score calculations

Domains	PROMIS-29 items	Mean	SD	Min	Max
1: Physical function	B1 – B4: physical function	41.24	9.02	22.90	56.90
2: Anxiety	C1 – C4: anxiety	49.71	8.60	40.30	81.40
3: Depression	D1 – D4: depression	49.44	8.35	41.00	79.30
4: Fatigue	El –E4: fatigue	50.85	9.04	33.70	75.80
5: Sleep	F1 – F4: sleep disturbance	47.29	8.84	32.00	73.30
6: Social	G1 – G4: ability to participate in social roles & activities	50.19	9.30	27.50	64.20
7: Pain interference	H1 – H4: pain interference	53.33	9.24	41.60	75.60
8: Pain intensity	H5: PROMIS-29 Pain Intensity Score	3.11	2.40	0.00	10.00

Note: N=1,296. At least one item in each short form has response. None is missing the intensity item. The first 7 domains are represented by IRT scale scores calculated from response pattern scoring at Assessment Center and are on a T-score metric with means of 50 and standard deviations of 10. The last item (pain intensity) is a single item on a scale of 0–10.