title: Toothache prevalence and associated factors: a population based study in southern Brazil.
abstract: OBJECTIVE
  The aim of this study was to estimate toothache prevalence and associated factors among adult residents in Pelotas, a southern Brazilian city.
  
  
  METHODS
  A cross-sectional population-based study was carried out in individuals aged > or = 20 years (n = 3353). A multi-stage sampling scheme was adopted, and data collection was performed at participants' homes through standardized pre-tested questionnaires. Toothache in the past 6 months was regarded as the outcome. Socioeconomic and demographic data as well as health-related behavioural data were collected. All analyses were undertaken with a Poisson regression model, following a hierarchical conceptual model.
  
  
  RESULTS
  The response rate was 93.5% and toothache prevalence was 17.7% (95% CI 16.0-19.3). Multivariable analyses revealed that toothache was more likely to be reported by those with low educational attainment and low family income. Younger subjects, women and black people were also more likely to report toothache. Current smokers and problem drinkers were at increased risk of experiencing toothache in the past 6 months.
  
  
  CONCLUSIONS
  The toothache prevalence reported in the present study is not negligible and should initiate the formulation of preventive policies and support the planning of local oral health services.
authors.affiliation: Post-graduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil. joao@pilotis.com.br
authors.forename: J L
authors.initials: JL
authors.lastname: Bastos
authors.forename: D P
authors.initials: DP
authors.lastname: Gigante
authors.forename: K G
authors.initials: KG
authors.lastname: Peres
mesh_terms: D000328:Adult; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012044:Regression Analysis; D012737:Sex Factors; D012907:Smoking; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014098:Toothache / Q000453:epidemiology*