Prevalence of auto-antibodies in microscopic colitis.

ANA = anti-nuclear antibodies, C-ANCA = cytoplasmic anti-neutrophil cytoplasmic antibodies, ASCA = anti-Saccharomyces cerevisiae antibodies, CRP = C-reactive protein, anti-IA2 = anti-islet antigens-like insulin 2, anti-GAD = anti-glutamic acid decarboxylase, Hb = haemoglobin, IgA = Immunglobulin A, IgG = Immunglobulin G, P = plasma, P-ANCA = peri-nuclear anti-neutrophil cytoplasmic antibodies, S = serum, anti-TPO = anti-thyroid peroxidase, TRAK = thyrotropin receptor antibodies. Reference values in brackets. n (%) = number (percent) of positive antibodies. Controls consisted of: α = healthy blood donors, 50 men and 50 women, β = 50 healthy blood donors, γ = 120 healthy women, reference No 17, δ = 282 healthy controls from reference No 16. Values are given as mean ± standard deviation or median (interquartile range). Student t- test, Mann-Whitney U- test or Fisheŕs exact test were used for comparisons between collagenous colitis and lymphocytic colitis. P