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Neurourol Urodyn. 2014 Apr;33(4):387-91. doi: 10.1002/nau.22429. Epub 2013 Jun 13.

The prevalence and risk factors of OAB in middle-aged and old people in China.

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  • 1Urodynamic Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.



To evaluate the prevalence of associated risk factors of over active bladder (OAB) in people ≥40 years old in mainland of China.


A randomized community-based, cross-sectional study was performed on 10,160 residents (≥40 years old) in the mainland of China using a questionnaire. The overactive bladder symptom score (OABSS) was filled upon site. The chi-square test was used to determine the differences of prevalence between sex, age groups, body mass index (BMI) and people with and without diabetes mellitus (DM).


A total of 9,805 (96.5%) subjects qualified for the final statistical analysis. The overall prevalence of OAB was 2.1% (209/9,805), of whom 1.0% had OABdry and 1.1% had OABwet . The prevalence of OAB was more common in men than in women over the age of 60 (4.6% vs. 2.6%, P < 0.05). The prevalence of OAB in subjects with DM was significantly higher than those without DM in patients with BMI ≥ 25 (P < 0.05). The subjects with a BMI over 29 were more likely to have OAB (3.2% vs. 1.8%, P < 0.05).


In this population, the prevalence of OAB increased with age for both sexes, but was higher for males over 60 years of age. The study also showed that diabetics with BMI ≥ 25 and people suffering from obesity are more likely to have OAB.

© 2013 Wiley Periodicals, Inc.


OAB; OABSS; diabetes mellitus; epidemiology; old people

[PubMed - indexed for MEDLINE]
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