Table 1.
Baseline characteristics of the participants according to the insulin stratification
| I(≤6.01) (n = 592) |
II (6.02-7.29) (n = 585) |
III(7.30-8.97) (n = 588) |
IV(≥8.98) (n = 585) |
p-value | |
|---|---|---|---|---|---|
| Age(yr) Male % |
41.9 ± 6.3 75.5 |
42.0 ± 6.4 74.2 |
40.7 ± 6.2 73.8 |
40.7 ± 6.0 74.2 |
< 0.001 0.915 |
| Life style | |||||
| Alcohol consumption (g/day) | 12.6 ± 14.8 | 12.4 ± 16.9 | 11.3 ± 15.5 | 11.8 ± 14.8 | 0.206 |
| Smoking % (No/Ex/Current) | 47.1/18.6/34.3 | 51.3/20.3/28.4 | 49.0/23/28.1 | 42.6/26.8/30.6 | 0.003 |
| Exercise % (none/less than once per week/more than once per week) |
21.6/31.6/46.8 | 22.9/33.5/43.6 | 24.1/39.6/36.2 | 25/42.7/32.3 | < 0.001 |
| BMI(kg/m2) | 22.7 ± 2.4 | 23.1 ± 2.5 | 23.8 ± 2.5 | 24.8 ± 2.8 | 0.018 |
| Waist circumference (cm) | 78.4 ± 8.2 | 79.1 ± 8.1 | 80.9 ± 8.1 | 83.7 ± 8.8 | < 0.001 |
| Systolic BP (mmHg) | 112.9 ± 12.6 | 113.4 ± 12.4 | 114.5 ± 13.8 | 115.6 ± 13.6 | < 0.001 |
| Diastolic BP mmHg) | 73.2 ± 9.6 | 73.4 ± 9.6 | 73.8 ± 10.1 | 74.5 ± 10.1 | 0.022 |
| Fasting glucose (mg/dl) | 87.4 ± 8.0 | 89.0 ± 7.9 | 90.9 ± 8.1 | 91.6 ± 7.6 | < 0.001 |
| Triglyceride (mg/dl) | 112.4 ± 61.2 | 121.0 ± 64.3 | 135.2 ± 70.3 | 154.2 ± 82.6 | < 0.001 |
| HDL-cholesterol(mg/dl) | 58.7 ± 11.8 | 58.2 ± 11.6 | 56.8 ± 11.6 | 55.3 ± 11.2 | < 0.001 |
| LDL-cholesterol(mg/dl) | 117.2 ± 30.0 | 118.6 ± 30.0 | 119.6 ± 29.4 | 124.3 ± 31.0 | < 0.001 |
| hs-CRP(mg/L) | 0.82 ± 1.16 | 0.78 ± 1.18 | 0.92 ± 1.46 | 1.15 ± 1.87 | 0.04 |
Values expressed as n (%) or mean ± standard deviation (by Student t -test)
BMI, body mass index; BP, blood pressure; hs-CRP, high-sensitivity C-reactive protein; MS, metabolic syndrome; DM, diabetes mellitus