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. 2013 Jun;42(6):551-61.
doi: 10.1016/j.semarthrit.2012.09.009. Epub 2013 Jan 9.

Association of kidney disease with prevalent gout in the United States in 1988-1994 and 2007-2010

Stephen P Juraschek  1 , Lara C Kovell, Edgar R Miller 3rd, Allan C Gelber
Affiliations

Association of kidney disease with prevalent gout in the United States in 1988-1994 and 2007-2010

Stephen P Juraschek et al. Semin Arthritis Rheum. 2013 Jun.

Abstract

Objective: To determine the prevalence of gout associated with progressive degrees of kidney disease in the US population.

Methods: We performed a cross-sectional analysis among non-institutionalized adults (age 20 and older) of the National Health and Nutrition Examination Surveys in 1988-1994 and 2007-2010. Gout status was ascertained by self-report of physician-diagnosed gout. Chronic kidney disease (CKD) was defined in stages based on estimated glomerular filtration rate (GFR) and single albuminuria measurements (albumin-to-creatinine ratio). Prevalence ratios comparing successive categories of GFR, albuminuria, and CKD as well as temporal trends over a 22-year interval were determined via Poisson regression.

Results: In the US, the crude prevalence of gout was 2-3% among participants without CKD, 4% among participants with CKD stage 1, 6-10% for stage 2, 11-13% for stage 3, and over 30% for stage 4. The adjusted prevalence ratio comparing the CKD stage 4 stratum to participants without CKD was 3.20 (95% CI: 1.96, 5.24) in 2007-2010 and remained significant even after adjustment for serum uric acid. Notably, there was a statistically significant, progressively greater adjusted prevalence ratio of gout associated with successively lower categories of GFR and higher categories of albuminuria.

Conclusions: Among US adults, there exists a strong dose-response association between impaired renal function and prevalent gout. Health providers should be aware of the elevated burden of gout among patients with CKD especially when evaluating new onset joint pain and swelling.

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Figures

Fig. 1
Fig. 1
Linear spline graph of the proportion of the US population with gout (solid line) or hyperuricemia (dashed line) in (A) NHANES III or (C) NHANES 2007–2010 according to the glomerular filtration rate (mL/min per 1.73 m2) with knots located at 30, 60, and 90 mL/min per 1.73 m2. Also, shown are linear splines according to albuminuria (mg/g) in (B) NHANES III or (D) NHANES 2007–2010 with knot located at 30 and 300 mg/g. Hyperuricemia is defined by a serum uric acid measurement >6.0 mg/dL in women and >7.0 mg/dL.
Fig. 2
Fig. 2
Kernel density plot depicting the distribution of glomerular filtration rate (mL/min per 1.73 m2) by the presence (solid line) or absence (dashed line) of gout in (A) NHANES III or (C) NHANES 2007–2010. Similarly, the distribution of albuminuria (mg/g) by gout status in (B) NHANES III or (D) NHANES 2007–2010.
See this image and copyright information in PMC

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