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Risk factors for initial surgery in patients with Crohn's disease in Central China
Min Chen1, Fengming Yi, Feng Zhou
1Department of Gastroenterology, Zhongnan Hospital of Wuhan University School of Medicine, Donghu Road 169, Wuhan, 430071, People's Republic of China, chenmin8106@aliyun.com.
Purposes:
To establish the risk factors for initial surgery in patients with Crohn's disease (CD) in Central China.
Methods:
The subjects of this study were patients with CD treated at Zhongnan Hospital of Wuhan University, an IBD center in Wuhan City, Central China, between January, 1992 and June, 2012. We conducted uni- and multivariate analyses of the risk factors for initial surgery for CD in these patients.
Results:
A total of 197 patients with CD were included in this study. The cumulative incidence of initial surgery was 21.8, 28.9, and 32.5%, at 1, 5, and 10 years, respectively, after the onset of symptoms. Analysis using multivariate Cox models showed that the relative risk for initial surgery was lower in patients who were younger than 16 years at diagnosis (HR = 0.57, 95% CI 0.34-0.96, P = 0.034). The risk increased in patients with stricturing (HR = 4.75, 95% CI 2.48-9.11), those with CD showing penetrating behavior at diagnosis (HR = 5.14, 95% CI 2.54-10.39), and those with a history of appendectomy (HR = 1.87, 95% CI 1.03-3.40). Azathioprine (AZA) treatment appeared to decrease the risk for initial surgery in patients with non-penetrating and non-stricturing CD (HR = 0.14, 95% CI 0.13-3.10).
Conclusion:
Age at diagnosis, disease behavior, and a history of appendectomy appeared to have an impact on the risk for initial surgery. AZA treatment might be helpful for decreasing the risk of needing initial surgery for patients in whom stricturing or fistulizing disease has not yet developed.
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