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Table 2 Demographic information for AS patients and controls

From: Inflammatory bowel disease serologies in ankylosing spondylitis patients: a pilot study

  AS patients Controls
Age in years (mean, range) 36.5, 19-61 30.8, 18-104
Disease duration in years (mean, range) 10.3, 0.12-43 Not applicable
Male (%) 62% 42%
HLA B27 (%) 84% Not available
Ethnicity Caucasian 80% African American 2.5% Asian 3.8% Hispanic 3.8% Caucasian and Hispanic 8.8% African American and Caucasian 1% Caucasian 100%
  1. HLA-B27 status for the control group was unavailable.
  2. AS = ankylosing spondylitis; HLA = human leukocyte antigen.