title: Association between soft drink consumption and asthma and chronic obstructive pulmonary disease among adults in Australia.
abstract: OBJECTIVE
  The aim of this study was to examine the association between soft drink consumption and self-reported doctor-diagnosed asthma and COPD among adults living in South Australia.
  
  
  METHODS
  Data were collected using a risk factor surveillance system. Each month a representative random sample of South Australians were selected from the electronic White Pages and interviews were conducted using computer-assisted telephone interviewing (CATI).
  
  
  RESULTS
  Among 16 907 participants aged 16 years and older, 11.4% reported daily soft drink consumption of more than half a litre. High levels of soft drink consumption were positively associated with asthma and COPD. Overall, 13.3% of participants with asthma and 15.6% of those with COPD reported consuming more than half a litre of soft drink per day. By multivariate analysis, after adjusting for socio-demographic and lifestyle factors, the odds ratio (OR) for asthma was 1.26 (95% confidence interval (CI): 1.01-1.58) and the OR for COPD was 1.79 (95% CI: 1.32-2.43), comparing those who consumed more than half a litre of soft drink per day with those who did not consume soft drinks.
  
  
  CONCLUSIONS
  There was a positive association between consumption of soft drinks and asthma/COPD among adults living in South Australia.
authors.affiliation: Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia. zumin.shi@adelaide.edu.au
authors.forename: Zumin
authors.initials: Z
authors.lastname: Shi
authors.forename: Eleonora
authors.initials: E
authors.lastname: Dal Grande
authors.forename: Anne W
authors.initials: AW
authors.lastname: Taylor
authors.forename: Tiffany K
authors.initials: TK
authors.lastname: Gill
authors.forename: Robert
authors.initials: R
authors.lastname: Adams
authors.forename: Gary A
authors.initials: GA
authors.lastname: Wittert
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000453:epidemiology* / Q000209:etiology; D002253:Carbonated Beverages / Q000009:adverse effects* / Q000706:statistics & numerical data; D016001:Confidence Intervals; D004327:Drinking Behavior; D005247:Feeding Behavior; D005260:Female; D005500:Follow-Up Studies; D005518:Food Preferences; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D015995:Prevalence; D011379:Prognosis; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology* / Q000209:etiology; D012189:Retrospective Studies; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D013021:South Australia / Q000453:epidemiology; D055815:Young Adult