title: Prevalence of chronic bronchitis in farm and nonfarm rural residents in Saskatchewan.
abstract: OBJECTIVE
  To determine the prevalence of chronic bronchitis (CB) and associated risk factors in farm and nonfarm rural residents in Saskatchewan, Canada.
  
  
  METHODS
  The questionnaire collected information about health, contextual, and individual factors from 8261 farm and nonfarm adult residents (18 years and older).
  
  
  RESULTS
  The prevalence of CB was 5.3% among farm residents and 6.4% among nonfarm residents. We found a greater prevalence of CB associated with household income adequacy, increasing age, allergies, history of lung disease in a parent, exposure to stubble smoke, obesity, prenatal exposure to smoking, and female sex. Smoking interacted with occupational exposure to wood dust and solvents, and allergic reaction to molds.
  
  
  CONCLUSIONS
  The results suggest that increasing household income and reducing smoking could be primary, modifiable determinants of CB prevalence.
authors.affiliation: Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada. pup165@mail.usask.ca
authors.forename: Punam
authors.initials: P
authors.lastname: Pahwa
authors.forename: Chandima
authors.initials: C
authors.lastname: Karunanayake
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Willson
authors.forename: Louise
authors.initials: L
authors.lastname: Hagel
authors.forename: Donna C
authors.initials: DC
authors.lastname: Rennie
authors.forename: Joshua A
authors.initials: JA
authors.lastname: Lawson
authors.forename: William
authors.initials: W
authors.lastname: Pickett
authors.forename: James A
authors.initials: JA
authors.lastname: Dosman
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000382:Agricultural Workers' Diseases / Q000453:epidemiology* / Q000209:etiology; D029481:Bronchitis, Chronic / Q000453:epidemiology* / Q000209:etiology; D015331:Cohort Studies; D005260:Female; D006306:Health Surveys; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D015995:Prevalence; D011446:Prospective Studies; D012307:Risk Factors; D012423:Rural Health / Q000706:statistics & numerical data*; D012525:Saskatchewan / Q000453:epidemiology; D057566:Self Report; D055815:Young Adult