Table 1.

Trends in prevalence (SE) of normal and decreased kidney function (estimated GFR categoriesa) by demographic characteristics for adults age 20 years and older: NHANES 1988 to 1994 and 1999 to 2000b

Survey YearOverallEstimated GFR Category (ml/min per 1.73 m2; %)
nU.S. Population (%)Normal 90+Mild 60–89Moderate 30–59Severe 15–29
Total1988–199415,488100.064.4 (0.86)31.2 (0.78)4.2 (0.25)0.19 (0.03)
1999–20004101100.059.9 (1.37)36.3 (1.26)3.7 (0.37)0.13 (0.06)c
GenderMale1988–1994727447.865.8 (1.00)30.7 (0.90)3.3 (0.30)0.15 (0.05)c
1999–2000191748.060.5 (1.51)36.7 (1.40)2.6 (0.39)0.12 (0.08)c
Female1988–1994821452.263.1 (1.16)31.7 (0.99)5.0 (0.40)0.23 (0.05)
1999–2000218452.059.4 (1.70)35.8 (1.59)4.7 (0.55)0.14 (0.08)c
Age (yr)20–391988–1994636745.786.3 (0.90)13.5 (0.88)0.21 (0.07)c0c
1999–2000146044.379.6 (1.57)19.9 (1.47)0.50 (0.24)c0c
40–591988–1994419431.755.7 (1.07)42.6 (1.11)1.8 (0.26)0.01 (0.01)c
1999–2000118534.456.6 (2.11)41.9 (2.18)1.5 (0.38)0.04 (0.04)c
60–691988–1994217411.439.0 (1.45)53.8 (1.78)6.7 (0.83)0.45 (0.20)c
1999–200068511.028.7 (2.17)65.1 (2.41)5.4 (1.21)0.75 (0.48)c
70+1988–1994275311.225.6 (1.38)48.6 (1.20)24.6 (1.12)1.2 (0.28)
1999–200077110.420.1 (1.17)56.8 (2.30)22.8 (2.12)0.33 (0.18)c
RaceNon-Hispanic white1988–1994645076.959.9 (1.07)35.1 (0.96)4.8 (0.30)0.19 (0.03)
1999–2000186071.653.8 (1.62)42.0 (1.56)4.1 (0.45)0.08 (0.06)c
Non-Hispanic black1988–1994416810.379.5 (1.09)17.5 (0.95)2.8 (0.24)0.24 (0.07)
1999–200076010.578.5 (1.95)18.1 (1.79)3.2 (0.46)0.23 (0.14)c
Mexican American1988–199442505.185.5 (0.61)13.4 (0.56)1.0 (0.15)0.06 (0.03)c
1999–200011176.383.6 (2.02)15.3 (1.89)1.1 (0.30)0.08 (0.07)c
Other1988–19946207.775.2 (3.32)22.4 (2.86)2.3 (0.88)c0.20 (0.20)c
1999–200036411.667.9 (3.77)28.9 (3.70)2.9 (0.94)c0.34 (0.35)c
  • a Estimated using the simplified Modified Diet in Renal Disease study formula.

  • b Excludes MEC-examined individuals with estimated GFR < 15 ml/min per 1.73 m2 and those with missing GFR data.

  • c Does not meet the standards for statistical reliability and precision (relative SE > 30%).