ArticleNeurourology and urodynamics2026
Elucidating Characteristics of Co-Existent Overactive and Underactive Bladder in Participants of the 2023 Japan Community Health Survey (JaCS 2023) With Nocturia.
Article in Neurourology and urodynamics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Elucidating Characteristics of Co-Existent Overactive and Underactive Bladder in Participants of the 2023 Japan Community Health Survey (JaCS 2023) With Nocturia.Neurourology and urodynamics · 2026Article
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13 authors.
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Abstract
objectivesTo clarify the characteristics of co-existent overactive and underactive bladder (COUB) in participants with nocturia from the 2023 Japan Community Health Survey. SUBJECTS AND
methodsParticipants reporting nocturia (≥1 episode per night) were divided into four groups: COUB, overactive bladder (OAB) alone, underactive bladder (UAB) alone, and neither OAB nor UAB (non-OAB/UAB). Nocturia-related variables were compared across groups. Multivariable analyses were performed to identify predictors of clinical nocturia (nocturia ≥ 2) and factors associated with reporting nocturia as the most impactful symptom in daily life.
resultsAmong 2,006 men and 1,787 women with nocturia, the prevalence of COUB was 6.1% and 2.6%, respectively. The proportion of nocturia ≥2 increased significantly in ascending order across four groups in men (non-OAB/UAB, UAB alone, OAB alone, COUB) and women (non-OAB/UAB, OAB alone, UAB alone, COUB) (p < 0.001 for both). Subjective nighttime voided volume (VV) compared to daytime VV and nocturnal voiding trigger also showed significant differences among the four groups in both genders (all p < 0.001). COUB independently predicted nocturia ≥ 2 in men (odds ratio OR: 2.50, p < 0.001) and women (OR: 2.39, p = 0.028). Although nocturia was ranked as the most impactful symptom in all groups, COUB was inversely associated with reporting nocturia as the most impactful symptom (men: OR: 0.43, p = 0.014; women: OR: 0.18, p = 0.002).
conclusionCOUB represents a distinct and severe phenotype among symptom syndromes and is independently associated with nocturia severity.
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