AUA 2018: Prevalence of Nocturia in US Women: Results from NHANES

San Francisco, CA ( The primary purpose of this study was to assess possible causes and overall prevalence of severe nocturia (≥ 2 per night) in the US women. Researchers state that current prevalence data is underestimated due to following reasons. Data show that average individual starts seeking medical help for nocturia in 2 years after first disease manifestation. Healthcare providers could also contribute to the underestimation of nocturia because many specialists don’t ask about the symptom.

Timothy Byler, MD pointed out various adverse conditions associated with nocturia in adults including increased mortality, high risk for falls, depression, a decrease in quality of life and work performance.

Researchers utilized NHANES database to pull data on women who completed a survey between 2009 and 2014. Aside from analyzing nocturnal voiding of the participants, Byler and colleagues looked into women’s age, race, education, household income, gynecologic and obstetrical history and whether or not patients reported overactive bladder episodes. Possible risk factors were evaluated by employing multivariable logistic regression analysis.

The study showed that one-third of women enrolled in the study had a severe nocturia (Figure 1). 

Age was the most significant risk factor associated with disease occurrence followed by black race, BMI of 30 or more, concurrent urinary incontinence, and presence of other comorbidities (Figure 2). There was no link between giving birth and developing severe nighttime voiding. Protective factors included higher income and education.


This study confirms that nocturia is affecting about 70% of the general population. About 30% of women report severe nocturic symptoms. The disease could be linked to depression, hypertension, arthritis, urge incontinence, and overall poor health status, but not to the obstetrical factors. These data can potentially inform healthcare providers about overall prevalence of nocturia in the US females and facilitate future research projects.

Presented by: Timothy Byler, MD, Upstate Medical University, Syracuse, New York
Co-Authors: Michael Daugherty, Natasha Ginzburg

Written by: Hanna Stambakio, BS, Clinical Research Coordinator, Division of Urology,, University of Pennsylvania, @PennUrology at the 2018 AUA Annual Meeting - May 18 - 21, 2018 – San Francisco, CA USA