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Table 2 Positivity rates and level of fecal calprotectin in ankylosing spondylitis patients and healthy controls

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

  Ankylosing spondylitis patients (n= 39) Healthy controls (n= 42) Pvalue
Fecal calprotectin (μg/g) 42 (16 to 1,085) 17 (16 to 104) 0.0002
Fecal calprotectin positive (positive > 50 μg/g) 16 (41%) 4 (10%) 0.0016
  1. Data presented as mean (range) or number (percentage).