• Yuan Yuan, Lin Qiu, Zhi-Yi Li, Lei Zhang, Tao Xu, Jing-He Lang, Zhao-Ai Li, Jian Gong, Qing Liu, Xiao-Chun Liu, Jun-Tao Wang, Zhi-Jun Xia, and Lan Zhu.
• Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Beijing 100730, China.
• Chin. Med. J. 2020 Feb 5; 133 (3): 262-268.

BackgroundFecal incontinence (FI) has been shown to be a common symptom in Western countries; however, there is few researches focusing on its epidemic condition in Chinese women. We conducted this national population-based epidemiology study to estimate the prevalence and risk factors of FI among adult Chinese women living in urban regions.MethodsThis is a subgroup analysis of a national population-based epidemiology study of FI. Total 28,196 adult women from urban regions of six provinces and municipalities participated in this research from 2014 to 2015. They finished the questionnaire under the direction of trained interviewers. FI was defined as accidental leakage of flatus and/or liquid or solid stool at least once in the past. The FI prevalence trend and risk factors were identified by the Cochran-Armitage test, Chi-square test, and multivariable logistic regression.ResultsThe prevalence of FI in adult females in urban China was 0.43% (95% confidence interval: 0.35%-0.51%). Among women with FI, 42.96%, 82.96%, and 42.22% reported having leakage of solid, liquid stool, and gas, respectively. The overall FI prevalence and the incidence rate of solid stool/liquid stool/gas leakage increased with age. The mean Wexner score was 4.0% and 12.0% FI patients reported Wexner score ≥9. Body mass index ≥24 kg/m, pelvic organ prolapses, chronic constipation, chronic cough, alcohol consumption, physical diseases including chronic bronchitis and cancer, gynecological diseases like gynecological inflammation are risk factors for FI. Vaginal delivery was the risk factor for FI in females with labor history.ConclusionsFI was not a common symptom in adult Chinese women living in urban areas and there were some potential modifiable risk factors.Trial RegistrationChinses Clinical Trial Registry: ChiCTR-OCS-14004675; http://www.chictr.org.cn/showproj.aspx?proj=4898.

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