Table 2.
Insulin resistance of subjects categorized by body mass index
| Total | Non-obese | Overweight | ||
|---|---|---|---|---|
| Body mass index Characteristics |
All N = 1,393 |
<25.0 kg/m2 N = 1,042 |
≥25.0 kg/m2 N = 351 |
P -value* |
| Fasting blood glucose (mg/dL) | 92 (87-99) | 91 (86-98) | 95 (89-103) | <0.001 |
| Immunoreactive insulin (mU/mL) | 5.1 (3.4-7.6) | 4.5 (3.0-6.5) | 8.0 (5.3-11.2) | <0.001 |
| HOMA-IR§ | 1.19 (0.75-1.83) | 1.02 (0.65-1.52) | 1.91 (1.23-2.81) | <0.001 |
| HOMA-IR§ ≤ 1.6, % | 68.1 | 77.9 | 39.0 | |
| HOMA-IR§ > 1.6 and ≤2.5, % | 19.8 | 16.1 | 30.8 | <0.001 |
| HOMA-IR§ > 2.5, % | 12.1 | 6.0 | 30.2 | <0.001 |
HOMA-IR, homeostasis of minimal assessment of insulin resistance. Data for fasting blood glucose, fasting insulin, and HOMA-IR were skewed, and are presented as median (interquartile range). §HOMA-IR was calculated using the following formula; {fasting blood glucose (FBG) (mg/dL) X fasting Immunoreactive insulin (mU/mL)}/405. Data for fasting blood glucose, fasting insulin, and HOMA-IR were log-transformed for analysis. *Student's t test or χ2 test.