Abstract: TH-PO528
Sociodemographic Trends in CKD Prevalence in the US
Session Information
- CKD: Health Services, Disparities, Prevention
November 02, 2017 | Location: Hall H, Morial Convention Center
Abstract Time: 10:00 AM - 10:00 AM
Category: Chronic Kidney Disease (Non-Dialysis)
- 307 CKD: Health Services, Disparities, Prevention
Authors
- Vart, Priya, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States
- Powe, Neil R., Priscilla Chan and Mark Zuckerberg San Francisco General Hospital & University of California SF, San Francisco, California, United States
- McCulloch, Charles E., University of California San Francisco, San Francisco, California, United States
- Saran, Rajiv, University of Michigan, Ann Arbor, Michigan, United States
- Gillespie, Brenda W., University of Michigan, Ann Arbor, Michigan, United States
- Saydah, Sharon, Centers for Disease Control and Prevention, Hyattsville, Alabama, United States
- Shrestha, Sundar, Centers for Disease Control and Prevention, Hyattsville, Alabama, United States
- Crews, Deidra C., Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
Group or Team Name
- CDC CKD Surveillance Team
Background
Overall prevalence of CKD in the U.S. has stabilized in recent years, however, whether this is true across sociodemographic groups is unknown. We examined trends in CKD prevalence by race/ethnicity, income (defined by poverty income ratio) and education using data from the population-based, cross-sectional National Health and Nutrition Examination Surveys (NHANES).
Methods
Participants >20 years with available creatinine were included. CKD prevalence was defined as eGFR 15 to <60 ml/min/1.73 m2 (CKD-EPI). NHANES data included for every 2 years from 2009-2014 (n range 4,869 to 5,662 per period). Unadjusted CKD prevalence was calculated for each sociodemographic group in each period. Interactions were tested between each sociodemographic group and survey period to assess trends. Adjusted [for age, sex, race/ethnicity (when not being examined)] relative risks were obtained comparing most vs. least disadvantaged category in each sociodemographic group for all periods 2009-2014.
Results
Adjusted CKD prevalence was higher in the most recent time period (2013-2014) for non-Hispanic whites (8.0%), Mexican-Americans (5.8%), poor (10.1%), high income (7.5%), 9-11th grade (8.4%) and some college/equivalent -educated persons (8.6%), as compared to earlier time periods for each specific group. Adjusted CKD prevalence among persons with <9th grade education fell to 7.9% in 2013-2014 (from 9.2% in 2011-2012). A statistically significant trend was only present for income (P for 6 year time trend of CKD prevalence was 0.2 for race, 0.03 for income and 0.3 for education). Adjusted relative risks for CKD prevalence are presented in the Table.
Conclusion
In recent years, CKD prevalence has increased in some sociodemographic groups, while decreasing in others.
Adjusted Relative Risk of CKD (95% CI) by Sociodemographic Group and Year
| Group | 2009-2010 | 2011-2012 | 2013-2014 |
| Non-Hispanic black vs. Non-Hispanic white | 1.3 (1.0-1.6) | 1.2 (0.9-1.5) | 0.9 (0.7-1.1) |
| Mexican American vs. Non-Hispanic white | 0.7 (0.4-0.9) | 0.7 (0.3-1.1) | 0.7 (0.4-1.1) |
| Poor vs. high income | 1.2 (0.7-1.6) | 1.3 (0.9-1.7) | 1.4 (0.7-2.0) |
| <9th grade vs. college education | 1.7 (1.2-2.2) | 1.4 (0.7-2.2) | 1.2 (0.6-1.8) |
Funding
- NIDDK Support