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Table 1 Baseline demographic and clinical characteristics (N = 397)

From: Psychometric characteristics of the short form 36 health survey and functional assessment of chronic illness Therapy-Fatigue subscale for patients with ankylosing spondylitis

Characteristica  
Age, years 42.0 (11.5)
Sex, n (%)  
   Female 96 (24.2)
   Male 301 (75.8)
Race, n (%)  
   White 380 (95.7)
   Non-white 17 (4.3)
HLA-B27, n (%)  
   Negative 74 (18.9)
   Positive 317 (81.1)
Duration of AS, years 11.3 (9.4)
Patient's global assessment of disease activity, 0-100-mm VAS 64.2 (20.7)
BASFI, 0-100 VAS 53.9 (21.9)
Inflammation, 0-100-mm VAS 67.7 (20.2)
Total back pain, 0-100-mm VAS 66.2 (20.2)
BASDAI, 0-10-cm VAS 6.3 (1.7)
C-reactive protein, mg/dL 1.9 (2.4)
  1. a Data are mean (SD) unless otherwise noted.