OBJECTIVETo explore the operative rate and reoperative rate of Crohn disease(CD) in China, and to assess the relative risk factors indicating surgical treatment in CD patients.

METHODSData of initial operation and reoperation were evaluated retrospectively in a cohort of 142 patients with CD. The influence of concomitant risk factors was assessed using multivariate analyses.

RESULTSOf the 142 cases of CD patients, 64.8% required at least one operation and the cumulative rate of operation was 52% at 5 years after onset. The relative risk of operation was increased in male patients, older than 40 years of age at onset, and those with CD involving small bowel. Of the patients undergone operation, 33.9% relapsed and required reoperation subsequently. The cumulative reoperation rate was 21% at 3 years after first operation. Male gender, a perforating indication for initial operation, as well as colonic and ileocolonic disease, increased the relative risks of reoperation.

CONCLUSIONSHalf of patients with CD will undergo an operation at 5 years after onset, and 20% of them will relapse and require reoperation at 3 years after first operation. Men run a higher risk of operation and reoperation than women do. A perforating indication for initial operation predict a higher risk of reoperation.