Table 1.
Participant characteristics, by age and eGFR: NHANES III
| Characteristic | eGFR Based on Serum Creatinine, Age, Race, and Gender (ml/min per 1.73 m2) |
||||
|---|---|---|---|---|---|
| ≥120 | 90 to 119 | 60 to 89 | 30 to 59 | 15 to 29 | |
| n | 720 | 2081 | 3232 | 868 | 41 |
| Creatinine (mg/dl) | 0.58 | 0.73 | 0.87 | 1.23 | 2.49 |
| eGFR based on serum creatinine, age, race, and gender (ml/min per 1.73 m2) | 138.4 | 102.9 | 76.4 | 49.8 | 23.6 |
| Cystatin C (mg/L) | 0.76 | 0.84 | 1.02 | 1.49 | 2.91 |
| eGFR based on cystatin C (ml/min per 1.73 m2) | 111.4 | 98.3 | 78.6 | 52.4 | 24.3 |
| eGFR based on cystatin C, age, race, and gender (ml/min per 1.73 m2) | 113.8 | 97.7 | 74.2 | 48.3 | 22.5 |
| Age (yr) | 35.4 | 46.2 | 63.9 | 73.4 | 73.9 |
| Female (%) | 61.7 | 49.6 | 51.3 | 56.3 | 61.0 |
| Race (%) | |||||
| non-Hispanic white | 16.3 | 35.0 | 57.3 | 68.8 | 51.2 |
| non-Hispanic black | 41.0 | 31.0 | 19.2 | 16.8 | 29.3 |
| Mexican American | 39.7 | 29.8 | 19.6 | 10.8 | 17.1 |
| other | 3.1 | 4.1 | 3.9 | 3.6 | 2.4 |
| Diabetes (%) | 6.1 | 6.8 | 10.5 | 17.5 | 41.5 |
| Prevalent CVD (%) | 4.3 | 8.5 | 18.7 | 39.5 | 48.8 |
| Hypertension category (%) | |||||
| optimal | 56.3 | 41.2 | 21.0 | 12.1 | 7.3 |
| prehypertension | 30.0 | 37.5 | 38.6 | 31.1 | 24.4 |
| stage 1 hypertension | 10.3 | 14.8 | 27.0 | 34.1 | 39.0 |
| stage 2 hypertension | 3.5 | 6.4 | 13.3 | 22.7 | 29.3 |
| Antihypertensive medication (%) | 17.1 | 28.9 | 54.5 | 82.1 | 97.6 |
| Current smoking (%) | 29.3 | 29.9 | 17.1 | 12.1 | 12.2 |
| Body mass index (kg/m2) | 26.6 | 26.8 | 27.4 | 27.3 | 28.2 |
| LDL cholesterol (mg/dl) | 112.2 | 121.6 | 135.2 | 140.2 | 140.8 |
| HDL cholesterol (mg/dl) | 52.5 | 51.1 | 51.1 | 49.9 | 50.8 |
| Triglycerides (mg/dl) | 132.4 | 132.6 | 154.7 | 180.5 | 232.4 |
| CRP (mg/dl; %) | |||||
| <0.22 | 63.9 | 66.8 | 62.2 | 54.0 | 46.3 |
| 0.22 to 0.99 | 25.4 | 23.2 | 28.2 | 31.0 | 36.6 |
| ≥1.00 | 10.7 | 10.1 | 9.6 | 15.0 | 17.1 |