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Table 1 Clinical and demographic characteristics of cases and controls.

From: Characterization of N-acetyltransferase 1 and 2 polymorphisms and haplotype analysis for inflammatory bowel disease and sporadic colorectal carcinoma

Group Male: Female (n) Average age (yrs) Average age of diagnosis, range(yrs) Family history of IBD (%) Family history of sporadic-CRC (%) Average length of follow up,range(yrs)
Sporadic-CRC 58:65 62 65 (28–97) < 2 21 5.2 (0–12)
CD 75:126 46 29(6–81) 38 23 4.6 (0–16)
UC 77:90 48 34(10–75) 25 36 4.3 (0–14)
IBD dysplasia/cancer 6:9 59 45 (12–81) 29 32 4.4 (0–16)
Control 76:147 53 - 9 37  
  1. CRC: colorectal cancer
  2. IBD: inflammatory bowel disease
  3. CD: Crohn's disease
  4. UC: ulcerative colitis