Table 1.
IRAS demographic summary of non-Hispanic White, Hispanic and African American participants
|
Non-Hispanic Whites
|
Hispanics
|
African Americans
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| N | Mean ± s.d. | Median | N | Mean ± s.d. | Median | N | Mean ± s.d. | Median | |
| Subjects | 458 | 373 | 289 | ||||||
| Demographics | |||||||||
| Age (years) | 458 | 56.2 ±8.2 | 57 | 373 | 55.1 ± 8.6 | 55 | 289 | 55.4 ± 8.3 | 56 |
| Female gender (%) | 238 | 52.0% | 218 | 58.5% | 170 | 58.8% | |||
| Type 2 Diabetes (%) | 98 | 21.4% | 84 | 22.5% | 95 | 32.9% | |||
| Obesity | |||||||||
| BMI (kg m−2) | 28.7 ± 5.7 | 27.6 | 28.9 ± 5.3 | 28.1 | 30.5 ± 5.9 | 29.3 | |||
| WAIST (cm) | 92.8 ± 13.5 | 92.4 | 92.1 ± 12.7 | 92.7 | 93.6 ± 13.1 | 92.4 | |||
| WHR | 0.872 ± 0.086 | 0.878 | 0.886 ± 0.089 | 0.885 | 0.856 ± 0.081 | 0.861 | |||
| Glucose homeostasis | |||||||||
| Fasting glucose (mg per 100 ml) | 99.1 ± 11.4 | 98 | 97.7 ± 10.7 | 96 | 101.9 ± 11.6 | 101 | |||
| Fasting insulin (μU ml−1) | 14.2 ± 11.9 | 11.5 | 17.1 ± 12.4 | 15 | 16.6 ± 14.8 | 14 | |||
| SG | 0.019 ± 0.008 | 0.019 | 0.02 ± 0.008 | 0.019 | 0.019 ± 0.009 | 0.018 | |||
| SI (× 10−5min−1 (pmoll−1)−1) | 2.37 ± 2.05 | 1.8 | 1.92 ± 1.97 | 1.38 | 1.91 ± 1.88 | 1.39 | |||
| AIR (pmoll−1) | 514 ± 395 | 415 | 732 ± 618 | 533 | 673 ± 510 | 553 | |||
| DI (SI × AIR; × 10−5min−1) | 992 ± 918 | 761 | 1140 ± 1172 | 761 | 1168 ± 1387 | 701 | |||
Abbreviations: AIR, acute insulin response; BMI, body mass index; DI, disposition index; IRAS, Insulin Resistance Atherosclerosis Study; SG, glucose effectiveness; SI, insulin sensitivity; WAIST, waist circumference; WHR, waist-to-hip ratio.