To estimate the incidence of urinary incontinence (UI), including its subtype: stress UI (SUI), urgency UI (UUI), and mixed UI (MUI), and to examine risk factors for de novo SUI and UUI in Chinese women.
Nationwide longitudinal study.
Six geographic regions of China PARTICIPANTS: Women aged ≥20 years old were included using a multistage, stratified, cluster sampling method.
This study was conducted between May 2014 and March 2016, with follow-up in 2018. Data on demographics, medical history, lifestyle, physiological and anthropometric information were collected.
incidence, rate ratio (RR) RESULTS: Analyses included 24,985 women ( mean age, 41.9 years old).The follow-up response rate was 55.5%, median follow-up time was 3.7 years. The standardized incidence of UI, SUI, UUI and MUI were 21.2, 13.1, 3.0, and 5.1/1000 person-years, respectively. Risk factors for de novo SUI included delivery pattern (vaginal spontaneous delivery (RR 2.12, 95% confidence interval 1.62-2.78), instrumental delivery (3.30, 1.99-5.45)), high body -mass index (BMI) (overweight (1.52, 1.33-1.74), obesity (1.67, 1.32-2.11)), cigarette smoking (1.54, 1.12-2.12), chronic cough (1.44, 1.17-1.76), diabetes (1.33, 1.10-1.60), and older age (50-59 years (1.49, 1.16-1.90), 60-69 years (1.61, 1.22-2.13)).The risk factors significantly associated with de novo UUI were age (RR increased from 1.21 (0.74-1.99) at 30-39 years to 6.3 (3.85-10.30) at >70 years) and diabetes (1.48, 1.05-2.09).
The incidence of female UI is 21.2/1000 person-years in China. Delivery (vaginal spontaneous delivery, instrumental delivery), high BMI, cigarette smoking, chronic cough, diabetes, and older age were risk factors.
BJOG : an international journal of obstetrics and gynaecology. 2021 Sep 18 [Epub ahead of print]
Haiyu Pang, Jun Lv, Tao Xu, Zhaoai Li, Jian Gong, Qing Liu, Yuling Wang, Juntao Wang, Zhijun Xia, Zhiyi Li, Liming Li, Lan Zhu
Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China., School of Public Health, Peking University Health Science Center, Beijing, 100191, China., Department of Epidemiology and Statistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China., Department of Gynecology and Obstetrics, Children's Hospital of Shanxi Province, Shanxi, China., Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Wuxi, Jiangsu, China., Department of Gynecology and Obstetrics, Maternal, Child Health Hospital of Gansu Province, Lanzhou, China., Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Foshan, Guangdong, China., Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Guiyang, Guizhou, China., Department of Gynecology and Obstetrics, Sheng Jing Hospital of China Medical University, Liaoning, China., Department of Gynecology and Obstetrics, National Clinical Research Center for Obstetric & Gynecologic Diseases, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.