Table 2.

Average Baseline Values of PROMIS Instruments and Respective Legacy Instruments

Domain	PROMIS (n)	Mean (SD) Median* [IQR]	Legacy Instrument (n)	Mean (SD) Median* [IQR]
Pain Intensity	Pain Intensity (n = 60)	53.7* [52.3–59.6]	Numerical Rating Scale (n = 44)	5.73 (1.97)
Pain Interference	Pain Interference (n = 68)	66.23 (6.06)	SF-36 Bodily Pain (n = 69)	31* [22–41]
			Brief Pain Inventory (n = 66)	5.95 (2.52)
Pain Behavior	Pain Behavior (n = 68)	60.82 (4.22)	Pain Catastrophizing Scale (n = 66)	1.58* [0.85–2.62]
			Fear Avoidance Belief Questionnaire (n = 68)	70.5* [57–80]
Functional Status	Physical Function (n = 68)	31.9* [27.2–36.5]	Roland-Morris Disability Questionnaire (RMDQ) (n = 63)	18* [13–21]
Depression	Depression (n = 68)	52.5 (10.77)	Patient Health Questionnaire (PHQ)-4 Depression (n = 63)	1* [0–3]
Anxiety	Anxiety (n = 68)	59.01 (9.99)	Patient Health Questionnaire (PHQ)-4 Anxiety (n = 63)	1* [0–3]
Fatigue	Fatigue (n = 64)	61.01 (958)	Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Subscale (n = 64)	25.81 (10.12)
Sleep	Sleep Disturbance (n = 61)	57.80 (13.03)	Medical Outcomes Study (MOS) Sleep Scale (n = 70)	45.66 (19.70)
Social	Social Isolation (n = 63)	46.3* [36.5–56.9]	MOS Social Support Survey (n = 63)	4.61* [3.53–5]

* = Median

The table includes only the completed instruments. Incomplete instruments, as described in the text, were not included in analyses. There was no non-response since the research team was administering all instruments