Table 1.

Summary statistics for overall sample population by stage of CKD

Parameter DescriptionOverallNo CKDCKD Stage 1CKD Stage 2CKD Stage 3CKD Stage 4
Patients (n)4148a253916143893856
Patients (%)10045.3 ± 1.62.6 ± 0.39.1 ± 0.621.0 ± 1.11.1 ± 0.2
Age (yr)72.0 ± 0.370.4 ± 0.369.0 ± 1.573.8 ± 0.876.4 ± 0.577.2 ± 1.4
Women (%)55.9 ± 1.052.9 ± 1.344.7 ± 5.456.5 ± 3.366.6 ± 2.258.8 ± 9.8
Race/ethnicity (%)
 White85.2 ± 1.186.1 ± 1.264.9 ± 6.179.3 ± 2.488.0 ± 1.480.1 ± 7.3
 Hispanic/Latino2.2 ± 0.22.2 ± 0.25.2 ± 1.03.0 ± 0.41.3 ± 0.21.5 ± 0.8
 Black8.6 ± 1.17.9 ± 1.225.5 ± 6.310.9 ± 2.47.0 ± 1.410.2 ± 7.8
Diabetes13.0 ± 0.68.8 ± 0.726.4 ± 5.925.6 ± 2.918.5 ± 1.823.0 ± 7.2
Hypertension64.6 ± 1.056.5 ± 1.175.1 ± 5.578.6 ± 2.481.0 ± 1.894.6 ± 3.4
Myocardial infarction11.9 ± 1.09.7 ± 1.115.1 ± 3.912.9 ± 2.417.2 ± 1.824.3 ± 8.0
Stroke6.3 ± 0.54.7 ± 0.66.5 ± 2.27.7 ± 1.510.3 ± 1.414.7 ± 6.6
Congestive heart failure7.6 ± 0.65.1 ± 0.75.9 ± 2.49.1 ± 1.614.2 ± 1.423.1 ± 9.0
Cancer20.6 ± 1.119.1 ± 1.215.7 ± 3.725.1 ± 3.124.1 ± 2.118.8 ± 6.8
Asthma8.4 ± 0.59.2 ± 0.814.3 ± 5.07.6 ± 2.05.6 ± 1.16.5 ± 3.4
Arthritis45.1 ± 1.243.4 ± 1.434.7 ± 6.944.5 ± 3.451.3 ± 2.458.8 ± 8.3
Pneumonia2.9 ± 0.42.8 ± 0.44.0 ± 3.52.4 ± 0.93.5 ± 0.70.5 ± 0.5
Back pain24.0 ± 0.923.3 ± 1.024.8 ± 4.825.1 ± 2.825.0 ± 2.233.6 ± 6.9
Chronic bronchitis9.4 ± 0.68.9 ± 0.99.5 ± 4.88.9 ± 1.710.9 ± 1.59.6 ± 5.3
Total medical costs (2010$)b7200 ± 2706100 ± 3709200 ± 17907900 ± 9009300 ± 65018,600 ± 4520

  • Unless otherwise noted, values are expressed as mean ± SEM.

  • ↵a Includes 16 people who had ESRD.

  • ↵b Updated to 2010 dollars by using the medical care component of the Consumer Price Index, rounded to the nearest $100.