Table 2.
CKD prevalence estimated from NHANES and from KEEP without and with inverse probability weighting, 2001–2012.
| Measure | NHANES (n = 28,517) | KEEP (n = 127,149) | |||||
|---|---|---|---|---|---|---|---|
| n | Weighted | n | Unweighted | Unweighted-GEE | Weighted | Weighted-GEE | |
| % (95% CI) |
% (95% CI) |
% (95% CI) |
% (95% CI) |
% (95% CI) |
|||
| CKD Stage 3 | 2,453 | 6.23 (5.82–6.66) | 16,706 | 13.14 (12.95–13.33) | 12.83 (11.88–13.85) | 8.57 (8.30–8.85) | 6.45 (5.70–7.28) |
| CKD Stage 3-5 | 2,692 | 6.73 (6.30–7.19) | 17,973 | 14.14 (13.94–14.33) | 13.86 (12.88–14.90) | 9.14 (8.86–9.43) | 6.90 (6.12–7.78) |
| CKD Stage 4-5 | 239 | 0.51 (0.43–0.59) | 1,267 | 1.00 (0.94–1.05) | 1.01 (0.93–1.09) | 0.55 (0.50–0.60) | 0.52 (0.42–0.64) |
Weighted estimates accounted for NHANES sampling design or self-selection by KEEP. KEEP GEE estimates accounted for participant clustering within regional affiliates. CKD – chronic kidney disease; KEEP – Kidney Early Evaluation Program; NHANES - National Health and Nutrition Examination Survey.