title: Prevalence of storage and voiding symptoms among men aged 40 years and older in a US population-based study: results from the Male Attitudes Regarding Sexual Health study.
abstract: OBJECTIVE
  Lower urinary tract symptoms (LUTS) are categorised as storage (urgency, frequency, nocturia and incontinence), voiding (sensation of incomplete emptying, hesitancy, weak stream and straining) or mixed symptoms.
  
  
  METHODS
  In this US population-based study, we investigated the prevalence of male LUTS and the relative frequency of the LUTS subtypes, and we evaluated associations between LUTS and age, race/ethnicity and erectile dysfunction (ED). The Male Attitudes Regarding Sexual Health study included a nationally representative sample of non-Hispanic black, non-Hispanic white and Hispanic men aged>or=40 years. Participants completed a questionnaire including items on ED and the International Prostate Symptom Score (IPSS). The prevalence and subtypes of LUTS were investigated post hoc by age, race/ethnicity and the presence of ED.
  
  
  RESULTS
  The overall prevalence rates of storage (13%) and mixed (9%) symptoms were higher than that of voiding symptoms (6%). The prevalence of storage symptoms was similar across age groups, whereas voiding and mixed symptoms increased with age. Among men with IPSS>or=8, the rates of storage (29%) and mixed (38%) symptoms were also higher than voiding symptoms (23%). Distributions of the LUTS subtypes were comparable among black, white and Hispanic respondents with IPSS>or=8. The overall prevalence rate of ED (40%) increased with age among those with IPSS>or=8. Isolated storage symptoms were more than twice as common as isolated voiding symptoms among US men>or=40 years of age.
  
  
  CONCLUSIONS
  Careful attention to individual symptoms may help distinguish storage LUTS from voiding LUTS, a distinction that has important implications for treatment.
authors.affiliation: Pfizer Inc., New York, NY 10017, USA. dale.glasser@pfizer.com
authors.forename: D B
authors.initials: DB
authors.lastname: Glasser
authors.forename: C
authors.initials: C
authors.lastname: Carson
authors.forename: J-H
authors.initials: JH
authors.lastname: Kang
authors.forename: E O
authors.initials: EO
authors.lastname: Laumann
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001294:Attitude to Health; D007172:Erectile Dysfunction / Q000150:complications / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011788:Quality of Life; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D014481:United States / Q000453:epidemiology; D014555:Urination Disorders / Q000150:complications / Q000453:epidemiology* / Q000523:psychology