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Table 1 Demographics of final sample

From: The MDRD equation underestimates the prevalence of CKD among blacks and overestimates the prevalence of CKD among whites compared to the CKD-EPI equation: a retrospective cohort study

  Black (%) White (%) p value for difference
Total # of Patients with ≥ 2 Labs 8.38% 91.62%  
Gender    
   Male 93.32% 95.21% < .0001
   Female 6.68% 4.79%  
Age (years)    
   20-39 11.21% 6.58% < .0001
   40-59 58.43% 35.26%  
   60-69 13.29% 20.82%  
   ≥ 70 17.07% 37.33%  
BMI    
   < 25 24.20% 19.13% < .0001
   25-30 34.93% 38.28%  
   30-40 35.07% 37.08%  
   > 40 5.79% 5.51%  
Per Capita Income ($)    
   < 20,000 47.34% 17.21% < .0001
   20,000 - 25,000 26.48% 38.75%  
   25,000 - 30,000 11.75% 24.03%  
   > 30,000 11.62% 18.01%