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Arthritis Care Res (Hoboken). 2013 Jan;65(1):127-32. doi: 10.1002/acr.21791.

Body mass index, obesity, and prevalent gout in the United States in 1988-1994 and 2007-2010.

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  • 1Johns Hopkins Bloomberg School of Public Health, Welch Center for Prevention, Epidemiology and Clinical Research, and Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA.

Abstract

OBJECTIVE:

To determine the association and prevalence of gout among overweight, obese, and morbidly obese segments of the US population.

METHODS:

Among participants (age ≥20 years) of the National Health and Nutrition Examination Surveys in 1988-1994 and 2007-2010, gout status was ascertained by self-report of a physician diagnosis. Body mass index (BMI) was examined in categories of <18.5 kg/m(2) , 18.5-24.9 kg/m(2) , 25-29.9 kg/m(2) , 30-34.9 kg/m(2) , and ≥35 kg/m(2) and as a continuous variable. The cross-sectional association of BMI category with gout status was adjusted for demographic and obesity-related medical disorders.

RESULTS:

In the US, the crude prevalence of gout was 1-2% among participants with a normal BMI (18.5-24.9 kg/m(2) ), 3% among overweight participants, 4-5% with class I obesity, and 5-7% with class II or class III obesity. The adjusted prevalence ratio comparing the highest to a normal BMI category was 2.46 (95% confidence interval [95% CI] 1.44-4.21) in 1988-1994 and 2.21 (95% CI 1.50-3.26) in 2007-2010. Notably, there was a progressively greater prevalence ratio of gout associated with successively higher categories of BMI. In both survey periods, for an average American adult standing 1.76 meters (5 feet 9 inches), a 1-unit higher BMI, corresponding to 3.1 kg (~6.8 pounds) greater weight, was associated with a 5% greater prevalence of gout, even after adjusting for serum uric acid (P < 0.001).

CONCLUSION:

Health care providers should be aware of the elevated burden of gout among both overweight and obese adults, applicable to both women and men, and observed among non-Hispanic whites, non-Hispanic African Americans, and Mexican Americans in the US.

Copyright © 2013 by the American College of Rheumatology.

PMID:
22778033
[PubMed - indexed for MEDLINE]
PMCID:
PMC3482278
Free PMC Article

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