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TABLE 1

Descriptive statistics of the IRAS Family Study cohort

Hispanic (San Antonio)
Hispanic (San Luis Valley)
African American (Los Angeles)
MenWomenMenWomenMenWomen
n 193 301 216 289 197 261 
Age (years) 38.4 ± 14.6 41.5 ± 13.7 40.5 ± 13.6 41.7 ± 12.9 42.7 ± 14.4 40.2 ± 13.1 
SI (10−4 · min−1 · μU−1 · ml−11.89 ± 1.87 2.02 ± 1.83 2.31 ± 1.84 2.33 ± 1.89 1.68 ± 1.20 1.59 ± 1.15 
AIR (pmol · ml−1 · min−1821 ± 728 661 ± 581 793 ± 635 835 ± 689 951 ± 855 1,005 ± 778 
DI 1,187 ± 1,106 1,055 ± 848 1,527 ± 1,336 1,642 ± 1,449 1,315 ± 1,199 1,440 ± 1,293 
BMI (kg/m229.2 ± 5.2 29.8 ± 6.5 26.9 ± 4.8 27.3 ± 5.4 28.0 ± 4.9 29.7 ± 7.1 
SAT (cm2274 ± 128 391 ± 154 252 ± 126 359 ± 140 251 ± 137 406 ± 196 
VAT (cm2124 ± 64 105 ± 55 117 ± 56 90 ± 50 96 ± 60 77 ± 47 
VAT/SAT ratio 0.48 ± 0.21 0.28 ± 0.12 0.51 ± 0.22 0.25 ± 0.12 0.42 ± 0.22 0.20 ± 0.10 
Overweight (%) 39 30 37 34 45 26 
Obese (%) 39 45 25 26 29 43 
Impaired fasting glucose (%) 7.3 8.0 6.9 6.9 10.7 8.4 
Hispanic (San Antonio)
Hispanic (San Luis Valley)
African American (Los Angeles)
MenWomenMenWomenMenWomen
n 193 301 216 289 197 261 
Age (years) 38.4 ± 14.6 41.5 ± 13.7 40.5 ± 13.6 41.7 ± 12.9 42.7 ± 14.4 40.2 ± 13.1 
SI (10−4 · min−1 · μU−1 · ml−11.89 ± 1.87 2.02 ± 1.83 2.31 ± 1.84 2.33 ± 1.89 1.68 ± 1.20 1.59 ± 1.15 
AIR (pmol · ml−1 · min−1821 ± 728 661 ± 581 793 ± 635 835 ± 689 951 ± 855 1,005 ± 778 
DI 1,187 ± 1,106 1,055 ± 848 1,527 ± 1,336 1,642 ± 1,449 1,315 ± 1,199 1,440 ± 1,293 
BMI (kg/m229.2 ± 5.2 29.8 ± 6.5 26.9 ± 4.8 27.3 ± 5.4 28.0 ± 4.9 29.7 ± 7.1 
SAT (cm2274 ± 128 391 ± 154 252 ± 126 359 ± 140 251 ± 137 406 ± 196 
VAT (cm2124 ± 64 105 ± 55 117 ± 56 90 ± 50 96 ± 60 77 ± 47 
VAT/SAT ratio 0.48 ± 0.21 0.28 ± 0.12 0.51 ± 0.22 0.25 ± 0.12 0.42 ± 0.22 0.20 ± 0.10 
Overweight (%) 39 30 37 34 45 26 
Obese (%) 39 45 25 26 29 43 
Impaired fasting glucose (%) 7.3 8.0 6.9 6.9 10.7 8.4 

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.

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