title: [The prevalence of snoring in male pilots].
abstract: OBJECTIVE
  To investigate and analysis the prevalence and risk factors of snoring and excessive daytime sleepiness among male pilots.
  
  
  METHODS
  1108 subjects were derived from a random sample of pilots. They were asked to answer the questions from a questionnaire concerning their snoring and daytime sleepiness, etc. 1054 questionnaire were available for evaluation.
  
  
  RESULTS
  The overall prevalence of snoring among male pilots was 51.04% (538/1054), while moderate and severe snorers accounted for 26.28% (227/1054). The prevalence of snoring among male pilots aged over 30 yr was 63.68% (426/669). The prevalence and severity of snoring increase with age and BMI. Age, overweight and obesity, alcohol ingestion and family history of snoring were associated with the prevalence and severity of snoring. There was significant difference in Epworth sleepiness scale scores among without snoring group and various severity of snoring groups (chi2 = 16.948, P < 0.05).
  
  
  CONCLUSIONS
  The prevalence of snoring is high in male pilots. The Epworth sleepiness scale score increase with increasing degree of snoring. Doctors should pay more attention to snoring in male pilot.
authors.affiliation: Sleep Disorder Center, PLA, General Hospital of Air Force, Beijing 100036, China.
authors.forename: Wan-er
authors.initials: WE
authors.lastname: Wang
authors.forename: Guang-qing
authors.initials: GQ
authors.lastname: Zhu
authors.forename: Ji-dong
authors.initials: JD
authors.lastname: Zhang
authors.forename: Rong
authors.initials: R
authors.lastname: Li
authors.forename: Yan-yan
authors.initials: YY
authors.lastname: Wang
authors.forename: Yu-zhen
authors.initials: YZ
authors.lastname: Zhang
authors.forename: Ju-qin
authors.initials: JQ
authors.lastname: Liu
authors.forename: Quan-ying
authors.initials: QY
authors.lastname: He
mesh_terms: D000328:Adult; D000401:Aircraft; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012913:Snoring / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D055815:Young Adult