Table 1.

Participant characteristics, by age and eGFR: NHANES III

CharacteristiceGFR Based on Serum Creatinine, Age, Race, and Gender (ml/min per 1.73 m2)
≥12090 to 11960 to 8930 to 5915 to 29
n7202081323286841
Creatinine (mg/dl)0.580.730.871.232.49
eGFR based on serum creatinine, age, race, and gender (ml/min per 1.73 m2)138.4102.976.449.823.6
Cystatin C (mg/L)0.760.841.021.492.91
eGFR based on cystatin C (ml/min per 1.73 m2)111.498.378.652.424.3
eGFR based on cystatin C, age, race, and gender (ml/min per 1.73 m2)113.897.774.248.322.5
Age (yr)35.446.263.973.473.9
Female (%)61.749.651.356.361.0
Race (%)
    non-Hispanic white16.335.057.368.851.2
    non-Hispanic black41.031.019.216.829.3
    Mexican American39.729.819.610.817.1
    other3.14.13.93.62.4
Diabetes (%)6.16.810.517.541.5
Prevalent CVD (%)4.38.518.739.548.8
Hypertension category (%)
    optimal56.341.221.012.17.3
    prehypertension30.037.538.631.124.4
    stage 1 hypertension10.314.827.034.139.0
    stage 2 hypertension3.56.413.322.729.3
Antihypertensive medication (%)17.128.954.582.197.6
Current smoking (%)29.329.917.112.112.2
Body mass index (kg/m2)26.626.827.427.328.2
LDL cholesterol (mg/dl)112.2121.6135.2140.2140.8
HDL cholesterol (mg/dl)52.551.151.149.950.8
Triglycerides (mg/dl)132.4132.6154.7180.5232.4
CRP (mg/dl; %)
    <0.2263.966.862.254.046.3
    0.22 to 0.9925.423.228.231.036.6
    ≥1.0010.710.19.615.017.1