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Table 2 Average Baseline Values of PROMIS Instruments and Respective Legacy Instruments

From: Comparison of patient-reported outcomes measurement information system and legacy instruments in multiple domains among older veterans with chronic back pain

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]

  1. * = Median
  2. 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