Table 6.

Burden of RA: non-sleep patient-reported outcomes. Data are mean (SD) unless otherwise indicated.

InstrumentMeasure of Burden
HAQ-DI score*1.08 (0.75)
PANAS negative19.40 (7.79)
PANAS positive31.65 (7.80)
VAS fatigue45.22 (26.29)
VAS pain39.04 (26.21)
SF-36Bodily pain§6.96 (2.19)
General health14.75 (3.89)
Mental health17.45 (4.30)
Physical function21.29 (5.10)
Vitality12.31 (3.39)
Role physical12.23 (4.11)
Social functioning7.50 (2.13)
Role emotional10.96 (3.41)
Coping with pain, n (%)0–243 (14.4)
(0: absence of control; 3: average3110 (36.8)
control; 6: total control)#4–6146 (46.8)
Ability to decrease pain, n (%)0–262 (20.9)
(0: can’t reduce pain; 3: in certain way;3131 (44.1)
6: can totally reduce pain)††4–6104 (35.0)
  • * n = 303.

  • n = 302.

  • n = 294.

  • § n = 301.

  • n = 300.

  • # n = 299.

  • †† n = 297.

  • HAQ-DI: Health Assessment Questionnaire-Disability Index; PANAS: Positive and Negative Affect Schedule; RA: rheumatoid arthritis; SF-36: Medical Outcomes Study Short Form-36 Health Survey; VAS: visual analog scale.