The prevalence of overactive bladder and nocturnal enuresis in Japanese early adolescents: a questionnaire survey.
To assess the prevalence of overactive bladder (OAB) and nocturnal enuresis (NE) in early adolescents, we distributed an anonymous questionnaire about urinary symptoms to 624 middle school students aged 13 and 15 years. The questionnaire included items regarding age, gender, past and present diseases, urinary symptoms and bowel habits. OAB was defined as symptoms of increased daytime frequency occurring more than eight times during the daytime and/or urge incontinence occurring at least once a month. The overall response rate to the questionnaire was 32.4%, and the mean age +/- SD of all respondents was 13.9 +/- 0.89 years. The prevalence of OAB was 15.3% of all respondents (95% CI, 10.4-20.3%; 4.2-16.1% of boys and 12.5-28.3% of girls). The prevalence of OAB decreased with age from 17.6% of respondents aged 13-year-olds to 11.8% of 15-year-olds. The mean daytime frequency was 5.0 +/- 2.2 times. Increased daytime frequency was found in 10.4% (95% CI, 6.2-14.6%; 2.7-13.5% of boys and 6.1-19.0% of girls) and nocturia in 4.0% (95% CI, 1.3-6.7%). The prevalence of NE was 3.0% (95% CI, 0.65-5.4%; three boys and three girls). The results of this study demonstrate that some early adolescents had OAB or NE. Further large-scale studies would be required to investigate the prevalence and natural history of OAB and NE.
The Department of Urology, Division of Frontier Medical Science, Programs for Biomedical Research, Graduate School of Biomedical Sciences, Hiroshima University.
Mitsuru
M
Kajiwara
Katsumi
K
Inoue
Kazuaki
K
Mutaguchi
Tsuguru
T
Usui
D000293:Adolescent; D003625:Data Collection; D004775:Enuresis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D015995:Prevalence; D011795:Surveys and Questionnaires; D014549:Urinary Incontinence / Q000453:epidemiology*; D014555:Urination Disorders / Q000453:epidemiology