title: Multimorbidity prevalence in the general population: the role of obesity in chronic disease clustering.
abstract: BACKGROUND
  The role of obesity in the prevalence and clustering of multimorbidity, the occurrence of two or more chronic conditions, is understudied. We estimated the prevalence of multimorbidity by obesity status, and the interaction of obesity with other predictors of multimorbidity.
  
  
  METHODS
  Data from adult respondents (18 years and over) to the Health Quality Council of Alberta 2012 Patient Experience Survey were analyzed. Multivariable regression models were fitted to test for associations.
  
  
  RESULTS
  The survey sample included 4803 respondents; 55.8% were female and the mean age was 47.8 years (SD, 17.1). The majority (62.0%) of respondents reported having at least one chronic condition. The prevalence of multimorbidity, including obesity, was 36.0% (95% CI, 34.8 - 37.3). The prevalence of obesity alone was 28.1% (95% CI 26.6 - 29.5). Having obesity was associated with more than double the odds of multimorbidity (odds ratio = 2.2, 95% CI 1.9 - 2.7) compared to non-obese.
  
  
  CONCLUSIONS
  The prevalence of multimorbidity in the general population is high, but even higher in obese than non-obese persons. These findings may be relevant for surveillance, prevention and management strategies for multimorbidity.
authors: Calypse B
authors: CB
authors: Agborsangaya
authors: Emmanuel
authors: E
authors: Ngwakongnwi
authors: Markus
authors: M
authors: Lahtinen
authors: Tim
authors: T
authors: Cooke
authors: Department of Public Health Sciences, 2-040 Li Ka Shing Center for Health Research and Innovation, University of Alberta, Edmonton, Alberta T6G 2E1, Canada. jeff.johnson@ualberta.ca.
authors: Jeffrey A
authors: JA
authors: Johnson
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000416:Alberta / Q000453:epidemiology; D002908:Chronic Disease / Q000453:epidemiology*; D016000:Cluster Analysis; D015897:Comorbidity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000453:epidemiology*; D015995:Prevalence; D012959:Socioeconomic Factors; D055815:Young Adult