title: Headaches amongst pool players.
abstract: BACKGROUND
  Pool-players' headache is a newly described entity. We studied the prevalence and risk factors for the development of headaches amongst pool players.
  
  
  METHODS
  We obtained demographic information, history of pre-existing headaches, frequency and duration of pool-playing, history of pre-existing headaches and their subtypes, competitive pool-playing and worsening or development of headaches amongst pool-players at 2 pool centers. Univariate and multivariate analyses were performed and statistical significance was set at P < .05.
  
  
  RESULTS
  Two hundred and three players, of mean age 22.6 (SD 7.7 years), participated in this study. Of the 21 respondents who reported headaches when playing pool, 11 (52.4%) had pre-existing headaches and 10 (47.6%) had no pre-existing headaches. Age and history of pre-existing headaches were significantly associated with worsening of headaches.
  
  
  CONCLUSIONS
  Pool-players are susceptible to the development of headaches. Avoidance and reduction in the frequency of pool-playing may reduce the frequency of headaches amongst pool players.
authors.affiliation: Division of Neurology, National University Hospital, Singapore.
authors.forename: Raymond C S
authors.initials: RC
authors.lastname: Seet
authors.forename: Yiong Huak
authors.initials: YH
authors.lastname: Chan
authors.forename: Erle C H
authors.initials: EC
authors.lastname: Lim
mesh_terms: D000293:Adolescent; D000328:Adult; D001265:Athletic Injuries / Q000150:complications*; D003430:Cross-Sectional Studies; D005260:Female; D006261:Headache / Q000145:classification / Q000453:epidemiology* / Q000209:etiology*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D019547:Neck Pain / Q000453:epidemiology / Q000209:etiology; D015995:Prevalence; D012307:Risk Factors; D013177:Sports