title: Association between obstructive sleep apnoea and chronic periodontitis: a population-based study.
abstract: OBJECTIVE
  This study set out to explore the association between obstructive sleep apnoea (OSA) and prior chronic periodontitis (CP) by utilizing a population-based data set with a case-control design in Taiwan.
  
  
  METHODS
  We included 7673 subjects with OSA as cases, and randomly selected 21,963 subjects without a history of OSA as controls. We performed conditional logistic regression analyses to explore the association between OSA and having been previously diagnosed with CP.
  
  
  RESULTS
  There was a significant difference in the prevalence of prior CP between cases and controls (33.8% versus 22.6%, p < 0.001). Conditional logistic regression analysis suggested that the odds ratio of prior CP for cases was 1.75 (95% CI = 1.68-1.88) times greater than that of controls after adjusting for monthly income and geographical location, as well as hypertension, diabetes, coronary heart disease, hyperlipidaemia, obesity, tobacco use disorder, and chronic obstructive pulmonary disease and alcohol abuse.
  
  
  CONCLUSIONS
  Our study detected an association between OSA and a prior diagnosis of CP.
authors.affiliation: School of Public Health, Taipei Medical University, Taipei, Taiwan.
authors.forename: Joseph J
authors.initials: JJ
authors.lastname: Keller
authors.forename: Chuan-Song
authors.initials: CS
authors.lastname: Wu
authors.forename: Yi-Hua
authors.initials: YH
authors.lastname: Chen
authors.forename: Herng-Ching
authors.initials: HC
authors.lastname: Lin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000437:Alcoholism / Q000150:complications; D016022:Case-Control Studies; D055113:Chronic Periodontitis / Q000150:complications*; D003327:Coronary Disease / Q000150:complications; D048909:Diabetes Complications; D005260:Female; D006801:Humans; D006949:Hyperlipidemias / Q000150:complications; D006973:Hypertension / Q000150:complications; D007182:Income; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications; D016017:Odds Ratio; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications; D012111:Residence Characteristics; D020181:Sleep Apnea, Obstructive / Q000150:complications*; D013624:Taiwan; D055815:Young Adult