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. 2013 Feb 28;98(4):1676–1684. doi: 10.1210/jc.2012-3817

Table 1.

Subject Characteristics

Boys (n = 35)
 Girls (n = 77)
 Two-way ANOVA (P)
NHW (n = 16) NHB (n = 19) NHW (n = 33) NHB (n = 44) Sex Race Sex by Race Interaction
Race, % 35.7 54.3 42.9 57.1
Tanner stage, %
    Prepubertal 5.7 2.9 0.0 0.0
    Midpubertal 20.0 28.6 2.6 7.9
    Late pubertal 22.9 20.0 39.5 50.0
Age, ya 13.7 ± 1.3 14.6 ± 1.4 14.2 ± 1.3 14.6 ± 1.5 .25 .07 .47
Height, cma 166.7 ± 7.2 166.3 ± 12.9 164.3 ± 5.9 162.3 ± 6.6 .34 .88 .62
Weight, kga 101.2 ± 17.3 117.3 ± 15.2 96.5 ± 15.2 101.3 ± 15.1 .32 .00 .08
BMI (kg/m2)a 36.4 ± 5.8 43.0 ± 8.9 35.6 ± 4.4 38.4 ± 5.1 .65 .00 .11
BMI-Za 2.48 ± 0.28 2.71 ± 0.16 2.29 ± 0.28 2.40 ± 0.26 .02 .01 .24
Lean mass, kga 56.7 ± 9.6 66.4 ± 9.7 53.0 ± 7.0 56.6 ± 7.4 .14 .00 .07
Body fat, %a 42.3 ± 4.5 41.8 ± 5.0 42.9 ± 3.6 42.4 ± 3.5 .62 .69 .99
Fat mass, kga 43.4 ± 10.0 49.6 ± 9.6 41.8 ± 8.3 43.7 ± 8.6 .56 .04 .24
REE, kcal/da 2036 ± 253.0 2016 ± 274.4 1765 ± 221.2 1751 ± 249.4 .00 .81 .95
REE, kcal/d/LBM, kga 36.4 ± 3.9 31.1 ± 4.9 33.7 ± 2.7 31.2 ± 4.3 .87 .00 .09
Fasting FFA, μMa 448.9 ± 179.0 596.2 ± 256.2 493.9 ± 149.1 473.4 ± 184.5 .43 .02 .03
Fasting glucose, mg/dLa 95.6 ± 19.2 88.9 ± 5.1 83.1 ± 9.3 86.6 ± 12.9 .00 .11 .04
Fasting insulin, μU/mLa 21.3 ± 12.5 23.1 ± 13.4 19.8 ± 15.0 22.7 ± 14.8 .73 .71 .85
SI, μU/mL/min × 10−4a,b 1.30 ± 0.62 1.01 ± 0.57 1.90 ± 1.28 1.18 ± 0.78 .04 .37 .26
AIRG, pmol/La,b 1292 ± 83.0 1353 ± 95.8 1312 ± 90.2 1304 ± 84.1 .47 .05 .07
Disposition indexa,c 0.12 ± 1.1 0.11 ± 1.2 0.20 ± 1.1 0.15 ± 1.2 .57 .21 .49
Fasting TGs, mg/dLa 183 ± 147.0 113 ± 66.4 139 ± 66.3 118 ± 106.2 .14 .04 .22

Abbreviation: TG, triglyceride.

a

Unadjusted means reported with SD.

b

SI was calculated using Bergman's minimal model (n = 34 boys and 76 girls) and AIRG by trapezoidal rule.

c

Disposition index was calculated by multiplying SI by AIRG and log transformed for 2-way ANOVA (n = 33 boys and 76 girls).