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Table 1 Patient characteristics

From: Development and evaluation of a crosswalk between the SF-36 physical functioning scale and Health Assessment Questionnaire disability index in rheumatoid arthritis

 

Calibration

Cross-validation

sample

sample

(n = 1791)

(n = 532)

Sex, % female

69.2

63.0

Age in years, mean (SD)

56.54 (13.31)

56.48 (14.26)

HAQ-SDI (0–3), mean (SD)*

1.08 (0.71)

0.65 (0.65)

PF-10 (0–100), mean (SD)

53.89 (26.35)

67.39 (25.71)

DAS28, mean (SD)*

-

4.28 (1.51)

VAS Pain (0–100), mean (SD)*

-

43.38 (26.23)

VAS General Health (0–100), mean (SD)*

-

44.49 (26.48)

  1. HAQ-SDI = Health Assessment Questionnaire standard disability index; PF-10 = SF-36 physical functioning scale; DAS28 = 28-joint Disease Activity Score; VAS Pain = visual analog scale for patient’s pain in the past week; VAS General Health = visual analog scale for patient’s general health in the past week. * Higher values indicate worse health states.