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Table 1 Patient characteristics

From: Incidence of neoplasias and effectiveness of postoperative surveillance endoscopy for patients with ulcerative colitis: comparison of ileorectal anastomosis and ileal pouch-anal anastomosis

  IPAA IRA p value
  (n = 90) (n = 30)  
Gender (male/female) 52/38 18/12 .83
Age at surgery (years) 38.7 ± 14.7a 36.4 ± 14.6a .48
Disease duration at surgery (years) 10.3 ± 7.8a 5.5 ± 4.3a .0017
Indication for surgery    
Cancer/dysplasia 27 1 .0022
Refractory 63 29  
Follow-up time (years) 10.0 (0.2–22.9)b 18.0 (2.3–44.1)b <.0001
Total disease duration (years) 20.3 ± 9.0a 23.4 ± 9.7a .21
  1. IPAA ileal pouch-anal anastomosis, IRA ileorectal anastomosis
  2. aMean ± standard deviation
  3. bMedian (range)