title: Effect of the helmet act for motorcyclists in Thailand.
abstract: OBJECTIVE
  This study investigated the effect of the helmet act for motorcyclists on increasing helmet use and reducing motorcycle-related deaths and severe injuries in Thailand.
  
  
  METHODS
  Data were derived from a trauma registry at the Khon Kaen Regional Hospital in the northeast Thailand. Helmet use and outcome in motorcycle crashes were compared 2 years before (1994-1995) and after (1996-1997) enforcement of the helmet act. During the study period, there were 12002 injured motorcyclists including 129 death cases in the municipality of Khon Kaen Province who were brought to the regional hospital.
  
  
  RESULTS
  After enforcement of the helmet act, helmet-wearers increased five-fold while head injuries decreased by 41.4% and deaths by 20.8%. Those who had head or neck injuries or died were less likely wearing a helmet. Compliance of helmet use was lower at night. Fatality of injured motorcyclists did not significantly decrease in the post-act period and among helmet-wearers.
  
  
  CONCLUSIONS
  Enforcement of the helmet act increased helmet-wearers among motorcyclists but helmet use did not significantly reduce deaths among injured motorcyclists. Motorcyclists should be instructed to properly and consistently wear a helmet for their safety.
authors.affiliation: Department of Community Health, School of International Health, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. masao@m.u-tokyo.ac.jp
authors.forename: Masao
authors.initials: M
authors.lastname: Ichikawa
authors.forename: Witaya
authors.initials: W
authors.lastname: Chadbunchachai
authors.forename: Eiji
authors.initials: E
authors.lastname: Marui
mesh_terms: D000063:Accidents, Traffic / Q000401:mortality / Q000517:prevention & control* / Q000706:statistics & numerical data*; D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006260:Head Protective Devices; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009049:Motorcycles / Q000331:legislation & jurisprudence*; D009790:Occupations; D011640:Public Policy; D012306:Risk; D017678:Sex Distribution; D013785:Thailand / Q000453:epidemiology; D013997:Time Factors; D014947:Wounds and Injuries / Q000453:epidemiology*