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Table 3 Demographic data for ankylosing spondylitis patients stratified by fecal calprotectin positivity

From: Markers of intestinal inflammation in patients with ankylosing spondylitis: a pilot study

  Fecal calprotectin cutoff 50 μg/g
  Fecal calprotectin positive (n= 16) Fecal calprotectin negative (n= 23) Pvalue
Mean age (years) 45 49 0.48
Male, n (%) 14 (88) 18 (78) 0.68
HLA-B27-positive, n (%) 11 (69) 18 (82) 0.71
Mean disease duration (years) 22 22 0.96
Ethnicity (%)    
   Caucasian 8 74 0.71
   Asian 0 13 0.26
   Hispanic 19 13 0.67