Table 1

Age-specific (unadjusted) and age-adjusted (adjusted) prevalence of the metabolic syndrome among U.S. adults aged ≥20 years in the NHANES III and NHANES 1999–2006

NHANES IIINHANES 1999–2006Absolute change %Relative change %P
n%(SEM)n%(SEM)
Total
        Unadjusted6,42327.9(1.1)6,96234.1(0.8)6.322.6<0.001
        Adjusted6,42329.2(1.0)6,96234.2(0.7)5.017.0<0.001
    Men
        Unadjusted3,05929.3(1.6)3,58234.2(1.1)4.916.80.012
        Adjusted3,05931.4(1.4)3,58234.9(1.0)3.511.20.046
        Aged 20–39 years1,21715.7(2.1)1,22920.2(1.4)4.428.10.080
        Aged 40–59 years83936.3(2.3)1,11441.2(1.7)5.013.70.083
        Aged 60+ years1,00350.3(2.3)1,23949.9(2.0)−0.4−0.80.899
    Women
        Unadjusted3,36426.5(1.4)3,38034.1(1.10)7.528.4<0.001
        Adjusted3,36427.1(1.2)3,38033.3(1.0)6.222.8<0.001
        Aged 20–39 years1,44710.7(1.7)1,06116.7(1.2)6.055.50.003
        Aged 40–59 years94330.2(2.3)1,11336.3(1.7)6.220.40.033
        Aged 60+ years97450.2(2.2)1,20656.8(1.9)6.613.10.022
NHW
    Men
        Unadjusted1,28430.8(2.0)1,88137.0(1.3)6.320.30.010
        Adjusted1,28432.1(1.9)1,88136.5(1.2)4.413.80.048
        Aged 20–39 years33716.6(2.8)52322.3(2.0)5.835.00.090
        Aged 40–59 years36137.1(3.0)61842.2(2.0)5.113.70.164
        Aged 60+ years58650.4(2.5)74051.4(2.4)1.02.10.762
    Women
        Unadjusted1,46226.5(1.6)1,72533.3(1.4)6.825.60.001
        Adjusted1,46226.2(1.4)1,72531.4(1.3)5.220.00.007
        Aged 20–39 years4469.1(1.9)48316.0(1.8)6.874.50.010
        Aged 40–59 years41129.4(2.7)54333.0(2.2)3.712.60.292
        Aged 60+ years60550.2(2.5)69955.2(2.1)5.09.90.121
NHB
    Men
        Unadjusted76220.2(1.2)63422.0(1.6)1.88.80.372
        Adjusted76223.1(1.4)63424.9(1.6)1.98.00.388
        Aged 20–39 years37513.9(1.5)26111.9(2.0)−2.0−14.10.439
        Aged 40–59 years21024.3(3.10)19226.6(3.2)2.39.30.613
        Aged 60+ years17736.9(3.3)18144.6(3.3)7.721.00.098
    Women
        Unadjusted91326.4(1.7)65634.3(1.7)7.930.00.001
        Adjusted91330.6(1.7)65636.5(1.6)5.919.30.014
        Aged 20–39 years47212.6(1.6)24418.9(2.5)6.349.80.036
        Aged 40–59 years26835.6(2.7)23040.7(3.4)5.114.20.241
        Aged 60+ years17353.3(4.0)18259.9(2.7)6.612.30.180
Mexican American
    Men
        Unadjusted89328.5(2.2)81029.4(2.2)0.93.30.767
        Adjusted89337.8(2.1)81036.6(1.9)−1.2−3.10.671
        Aged 20–39 years45717.6(2.7)32418.9(2.8)1.37.30.743
        Aged 40–59 years22648.0(3.5)22844.4(3.0)−3.6−7.50.433
        Aged 60+ years21056.1(5.4)25854.5(3.6)−1.6−2.80.810
    Women
        Unadjusted85333.1(1.6)74136.4(2.2)3.310.00.222
        Adjusted85341.7(1.7)74142.6(1.7)0.92.20.701
        Aged 20–39 years47519.8(1.9)24120.9(2.9)1.15.30.758
        Aged 40–59 years21751.4(3.2)24449.6(3.3)−1.8−3.50.699
        Aged 60+ years16163.6(3.8)25668.6(3.9)5.18.00.352
Other
    Men
        Unadjusted12025.8(4.7)25728.9(3.3)3.112.00.590
        Adjusted12030.5(4.3)25731.9(3.2)1.44.50.798
        Aged 20–39 years489.1(5.3)12117.5(3.2)8.492.80.177
        Aged 40–59 years4233.5(0.8)7646.5(7.1)13.038.90.316
        Aged 60+ years3062.3(0.5)6033.0(4.8)−29.3−47.10.012
    Women
        Unadjusted13622.7(4.6)25837.9(4.2)15.267.10.015
        Adjusted13624.0(3.9)25839.3(3.8)15.363.60.005
        Aged 20–39 years5415.6(7.5)9314.8(4.6)−0.8−4.90.931
        Aged 40–59 years4721.7(8.3)9648.8(4.6)27.1124.40.005
        Aged 60+ years3542.2(7.7)6966.1(6.8)23.956.60.021