Table 1.
Characteristics (Combined Ethnicities) of High and Low SI Subjects
| Trait | Combined Subjects (n = 147) |
High SI Subjects (n = 72) |
Low SI Subjects (n = 75) |
P Valuea | |||
|---|---|---|---|---|---|---|---|
| Mean ± sd | Median | Mean ± sd | Median | Mean ± sd | Median | ||
| Age, y | 56 ± 9 | 56 | 53 ± 8 | 52 | 59 ± 8 | 62 | 4.5E − 06 |
| Female, % | 61% | 64% | 57% | .42 | |||
| BMI, kg/m2 | 29.0 ± 4.3 | 28.7 | 26.8 ± 3.4 | 26.3 | 31.2 ± 3.9 | 30.5 | 1.4E − 11 |
| SI, ×10−5/pmol/L/min | 2.86 ± 3.22 | 0.90 | 5.61 ± 2.51 | 4.87 | 0.22 ± 0.27 | 0.15 | 1.1E − 28 |
| AIR, pmol/L | 452 ± 455 | 300 | 403 ± 395 | 290 | 499 ± 504 | 345 | .20 |
| Disposition index (SI × AIR), ×10−5/min | 1008 ± 1450 | 335 | 1936 ± 1604 | 1404 | 117 ± 199 | 9 | 1.7E − 14 |
| Fasting glucose, mg/dl | 101 ± 15 | 97 | 94 ± 11 | 92 | 107 ± 15 | 104 | 1.2E − 08 |
a
Comparison of high and low SI samples using a two-tailed t test with unequal variance.