title: Oral Health-Related Quality of Life among a large national cohort of 87,134 Thai adults.
abstract: BACKGROUND
  Oral health has been of interest in many low and middle income countries due to its impact on general health and quality of life. But there are very few population-based reports of adult Oral Health Related Quality of Life (OHRQoL) in developing countries. To address this knowledge gap for Thailand, we report oral health findings from a national cohort of 87,134 Thai adults aged between 15 and 87 years and residing all over the country.
  
  
  METHODS
  In 2005, a comprehensive health questionnaire was returned by distance learning cohort members recruited through Sukhothai Thammathirat Open University. OHRQoL dimensions included were discomfort speaking, swallowing, chewing, social interaction and pain. We calculated multivariate (adjusted) associations between OHRQoL outcomes, and sociodemographic, health behaviour and dental status.
  
  
  RESULTS
  Overall, discomfort chewing (15.8%), social interaction (12.5%), and pain (10.6%) were the most commonly reported problems. Females were worse off for chewing, social interaction and pain. Smokers had worse OHRQoL in all dimensions with Odds Ratios (OR) ranging from 1.32 to 1.51. Having less than 20 teeth was strongly associated with difficulty speaking (OR = 6.43), difficulty swallowing (OR = 6.27), and difficulty chewing (OR = 3.26).
  
  
  CONCLUSIONS
  Self-reported adverse oral health correlates with individual function and quality of life. Outcomes are generally worse among females, the poor, smokers, drinkers and those who have less than 20 teeth. Further longitudinal study of the cohort analysed here will permit assessment of causal determinants of poor oral health and the efficacy of preventive programs in Thailand.
authors.affiliation: National Centre for Epidemiology and Population Health, The Australian National University, Canberra, Australia.
authors.forename: Vasoontara
authors.initials: V
authors.lastname: Yiengprugsawan
authors.forename: Tewarit
authors.initials: T
authors.lastname: Somkotra
authors.forename: Sam-ang
authors.initials: SA
authors.lastname: Seubsman
authors.forename: Adrian C
authors.initials: AC
authors.lastname: Sleigh
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D001294:Attitude to Health / Q000208:ethnology; D015331:Cohort Studies; D005260:Female; D015438:Health Behavior / Q000208:ethnology; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009909:Oral Health; D009910:Oral Hygiene; D011159:Population Surveillance; D011788:Quality of Life / Q000523:psychology*; D017678:Sex Distribution; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013785:Thailand; D016388:Tooth Loss / Q000208:ethnology / Q000503:physiopathology / Q000523:psychology; D055815:Young Adult