Table 1.
Demographic Summary of IRASFS Hispanic American and African American Participants
| Hispanic Americans | African Americans | ||||||
|---|---|---|---|---|---|---|---|
| n | Mean ± SD | Median | n | Mean ± SD | Median | P-Value | |
| Subjects | 1,268 | 581 | |||||
| Demographics | |||||||
| Age (years) | 42.8 ± 14.6 | 41.3 | 42.9 ± 14.0 | 41.5 | |||
| Female Gender (%) | 58.8 % | 59.2 % | |||||
| Normal Weight (%) (BMI < 25 kg/m2) | 28.9 % | 24.0 % | |||||
| Overweight (%) (25 kg/m2 ≤ BMI < 30 kg/m2) | 33.6 % | 33.3 % | |||||
| Obese (%) (BMI ≥ 30 kg/m2) | 37.4 % | 42.7 % | |||||
| Adiposity | |||||||
| BMI (kg/m2) | 28.9 ± 6.1 | 28.1 | 30.0 ± 6.8 | 29.0 | |||
| Waist Circumference (WAIST; cm) | 89.8 ± 14.3 | 89.1 | 91.7 ± 15.1 | 91.3 | |||
| Waist Hip Ratio (WHR) | 0.86 ± 0.09 | 0.85 | 0.83 ± 0.09 | 0.83 | |||
| SAT (cm2) | 338.8 ± 154.7 | 313.7 | 356.5 ± 190.1 | 325.6 | |||
| VAT (cm2) | 113.9 ± 61.2 | 105.9 | 93.7 ± 58.9 | 83.3 | |||
| VSR | 0.38 ± 0.21 | 0.33 | 0.30 ± 0.19 | 0.26 | |||
| Glucose Homeostasis | |||||||
| SI(×10−5 min−1/[pmol/l]) | 2.15 ± 1.86 | 1.70 | 1.63 ± 1.17 | 1.41 | 1.55×10−8 | ||
| AIR(μU/mL) | 760.2 ± 649.3 | 587.0 | 1005.8 ± 826.2 | 771.5 | 3.05×10−10 | ||
| DI(SI × AIR; × 10−5 min−1) | 1316.5 ± 1236.0 | 1005.2 | 1425.7 ± 1269.2 | 1151.5 | 0.1081 | ||
| Fasting Insulin | 14.9 ± 11.0 | 12.0 | 14.4 ± 11.3 | 11.0 | |||
| Fasting Glucose (mg/dL) | 93.4 ± 9.5 | 92.0 | 94.6 ± 9.7 | 93.0 | |||
Abbreviations: IRASFS, Insulin Resistance Atherosclerosis Family Study; BMI, body mass index; WAIST, waist circumference; WHR, waist to hip ratio; SAT, subcutaneous adipose tissue; VAT, visceral adipose tissue; VSR, visceral to subcutaneous ratio; SI, insulin sensitivity; AIR, acute insulin response; DI, disposition index