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Table 1 Distribution of ulcerative colitis and Crohn’s disease

From: The prevalence and phenotype in Brazilian patients with inflammatory bowel disease

Demographic variables IBD
n = 1026
UC CD p
n % n %  
Year (Yr) 2013 339 62.8% 207 37.92% 0.043
2014 330 68.75% 150 31.25%  
Age at diagnosis (A)a A1: ≤ 16 23 3.40% 25 7.00%  
A2: 17–40 318 47.50% 208 58.30% 0.001
A3: > 40 328 49.00% 124 34.70%  
Gender Female 407 60.80% 195 54.60% 0.156
Male 262 39.20% 162 45.40%  
New cases 2013 215 51.3% 117 55.7% 0.346
2014 204 48.7% 94 44.3%  
Old Cases 2013 124 49.6% 90 61.6% 0.058
2014 126 50.4% 56 38.4%  
  1. aAge at diagnosis is not a phenotypic element of the Montreal classification for ulcerative colitis; UC ulcerative colitis, CD, Crohn’s disease