TABLE 1

Descriptive statistics of the IRAS Family Study cohort

Hispanic (San Antonio)
Hispanic (San Luis Valley)
African American (Los Angeles)
MenWomenMenWomenMenWomen
n193301216289197261
Age (years)38.4 ± 14.641.5 ± 13.740.5 ± 13.641.7 ± 12.942.7 ± 14.440.2 ± 13.1
SI (10−4 · min−1 · μU−1 · ml−1)1.89 ± 1.872.02 ± 1.832.31 ± 1.842.33 ± 1.891.68 ± 1.201.59 ± 1.15
AIR (pmol · ml−1 · min−1)821 ± 728661 ± 581793 ± 635835 ± 689951 ± 8551,005 ± 778
DI1,187 ± 1,1061,055 ± 8481,527 ± 1,3361,642 ± 1,4491,315 ± 1,1991,440 ± 1,293
BMI (kg/m2)29.2 ± 5.229.8 ± 6.526.9 ± 4.827.3 ± 5.428.0 ± 4.929.7 ± 7.1
SAT (cm2)274 ± 128391 ± 154252 ± 126359 ± 140251 ± 137406 ± 196
VAT (cm2)124 ± 64105 ± 55117 ± 5690 ± 5096 ± 6077 ± 47
VAT/SAT ratio0.48 ± 0.210.28 ± 0.120.51 ± 0.220.25 ± 0.120.42 ± 0.220.20 ± 0.10
Overweight (%)393037344526
Obese (%)394525262943
Impaired fasting glucose (%)7.38.06.96.910.78.4
  • Data are means ± SD or %. Population estimates for overweight are (reading left to right) 46, 32, 46, 32, 37, and 30. Population estimates for obesity are (reading left to right) 24, 36, 24, 36, 21, and 39. Population estimates for impaired fasting glucose are (reading left to right) 11.6, 6.3, 11.6, 6.3, 7.7, and 6.4. See text for citations for population estimates.