title: Prevalence of helmet use among motorcycle riders in Vietnam.
abstract: OBJECTIVE
  To investigate the rate of helmet use among motorcycle drivers in Hai Duong province of Vietnam during winter/spring 2005, and to compare the rates of helmet use by road types.
  
  
  METHODS
  Population-based observational surveys.
  
  
  RESULTS
  16,560 motorcyclists were observed across 37 road sites (incorporating 5 road categories). The overall weighted average of helmet use for motorcyclists was 29.94%, with male drivers more likely to wear helmets than female drivers (odds ratio (OR) 1.64, 95% confidence interval (CI) 1.53 to 1.76). Male pillion passengers were less likely to wear helmets than female pillion passengers (OR 0.78, 95% CI 0.72 to 0.85). The number of adult drivers using helmets is larger as compared with that of young drivers (OR 8.56, 95% CI 5.93 to 12.19). The rates of helmet use were significantly higher (p<0.001) on compulsory roads and were 59.01%, 39.97%, 24.22%, 12.7% and 9.54% for national, provincial, district, commune and Hai Duong inner-city roads, respectively.
  
  
  CONCLUSIONS
  Helmet legislation has increased the rate of helmet use by motorcycle drivers on compulsory roads. Elsewhere, rate of helmet use is very low, indicating that in the absence of legislation and enforcement, motorcyclists in Vietnam will not wear a helmet.
authors.affiliation: Injury and Musculoskeletal Division, The George Institute for International Health, University of Sydney, Sydney, New South Wales, Australia. vdan8956@mail.usyd.edu.au
authors.forename: D V
authors.initials: DV
authors.lastname: Hung
authors.forename: M R
authors.initials: MR
authors.lastname: Stevenson
authors.forename: R Q
authors.initials: RQ
authors.lastname: Ivers
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006260:Head Protective Devices / Q000706:statistics & numerical data*; D015438:Health Behavior; D006801:Humans; D008297:Male; D009049:Motorcycles / Q000331:legislation & jurisprudence; D014744:Vietnam