title: Prevalence and risk factors of erectile dysfunction in three cities of China: a community-based study.
abstract: OBJECTIVE
  To determine the age-adjusted prevalence of erectile dysfunction (ED) in 3 big cities of China and to explore its potential sociodemographic, medical and lifestyle correlates.
  
  
  METHODS
  A cross-sectional, population-based survey was conducted in three cities of China. Structured questionnaires were administered to 2 226 men, aged 20 - 86 years, by trained interviewers.
  
  
  RESULTS
  The age-adjusted prevalence of ED was 28.34 % (mild 15.99 %, moderate 7.14 %, severe 5.21 %). In the men above 40, the prevalence was 40.2 %. Age was positively correlated with ED (P<0.01). Education was negatively correlated with ED (P<0.01). Spouse companionship, living condition were positively correlated with ED (P<0.01). Histories of cardiovascular disease, diabetes, and hyperlipidemia were positively correlated with ED (P<0.01). Cigarette smoking was not correlated with ED (P>0.05), while the cigarette consumption and duration were positively correlated with ED (P<0.01). Alcohol drinking is negatively correlated with ED (P<0.01). The duration of drinking was positively correlated with ED (P<0.01). Weekly alcohol consumption was not correlated with ED (P>0.05).
  
  
  CONCLUSIONS
  The prevalence of ED increased with age. Cardiovascular disease, diabetes and hyperlipidemia were positively correlated with the increased prevalence. Sociodemographic and lifestyle factors, such as education, spouse companionship, living condition, cigarette and alcohol consumption or duration also have association with the prevalence of ED.
authors.affiliation: Department of Urology, Peking University People's Hospital, Beijing 100044, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Bai
authors.forename: Qing-Quan
authors.initials: QQ
authors.lastname: Xu
authors.forename: Hui
authors.initials: H
authors.lastname: Jiang
authors.forename: Wei-Li
authors.initials: WL
authors.lastname: Zhang
authors.forename: Xing-Huan
authors.initials: XH
authors.lastname: Wang
authors.forename: Ji-Chuan
authors.initials: JC
authors.lastname: Zhu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects; D002318:Cardiovascular Diseases / Q000150:complications / Q000453:epidemiology; D002681:China; D003430:Cross-Sectional Studies; D003920:Diabetes Mellitus / Q000453:epidemiology; D004493:Education; D007172:Erectile Dysfunction / Q000453:epidemiology*; D006801:Humans; D006949:Hyperlipidemias / Q000150:complications / Q000453:epidemiology; D008019:Life Style; D008297:Male; D008393:Marriage; D008875:Middle Aged; D011153:Population; D012307:Risk Factors; D012907:Smoking / Q000503:physiopathology; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires