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. 2014 Jul;18(7):635-9.
doi: 10.1007/s10151-013-1111-y. Epub 2014 Jan 23.

Risk factors for anal fistula: a case-control study

D Wang  1 , G Yang, J Qiu, Y Song, L Wang, J Gao, C Wang
Affiliations

Risk factors for anal fistula: a case-control study

D Wang et al. Tech Coloproctol. 2014 Jul.

Abstract

Background: The aim of our study was to identify potential risk factors for anal fistula in order to improve prevention and treatment of anal fistula.

Methods: A retrospective case-control study for anal fistula was conducted at our unit. Logistic regression analyses were carried out to identify associated risk factors for anal fistula.

Results: The final model obtained by the stepwise forward logistic regression analysis method identified the following items as independent risk factors: body mass index of >25.0 kg/m(2), high daily salt intake, history of diabetes, hyperlipidemia, dermatosis, anorectal surgery, history of smoking and alcohol intake, sedentary lifestyle, excessive intake of spicy/greasy food, very infrequent participation in sports and prolonged sitting on the toilet for defecation.

Conclusions: Our results indicate that lifestyle factors and certain medical conditions increase an individual's risk of developing anal fistula.

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