Table 3.
Baseline characteristics stratified by tertiles of TyG index.
| Variables | Tertile 1 n=284 |
Tertile 2 n=293 |
Tertile 3 n=285 |
P |
|---|---|---|---|---|
| Age (years) | 75.0 (69.0-80.0) | 74.0 (68.0-78.5) | 73.0 (67.0-78.0) | 0.019 |
| BMI (kg/m2) | 24.7 ± 0.17 | 25.3 ± 0.16 | 25.7 ± 0.16 | <0.001 |
| WC (cm) | 88.3 ± 0.54 | 89.2 ± 0.50 | 90.7 ± 0.51 | 0.005 |
| SBP (mmHg) | 130 (120-140) | 130 (120-140) | 130 (120-140) | 0.831 |
| DBP (mmHg) | 75 (70-80) | 75 (70-80) | 80 (70-82) | 0.020 |
| HDL-c (mmol/l) | 1.3 ± 0.02 | 1.2 ± 0.02 | 1.2 ± 0.03 | <0.001 |
| LDL-c (mmol/l) | 3.2 ± 0.05 | 3.4 ± 0.05 | 3.1 ± 0.06 | 0.001 |
| TC (mmol/l) | 5.0 ± 0.05 | 5.3 ± 0.05 | 5.5 ± 0.06 | <0.001 |
| TG (mmol/l) | 1.1 ± 0.02 | 1.6 ± 0.01 | 2.7 ± 0.09 | <0.001 |
| TyG index | 8.2 ± 0.02 | 8.7 ± 0.01 | 9.2 ± 0.02 | <0.001 |
| FPG (mmol/l) | 4.6 ± 0.04 | 4.9 ± 0.03 | 5.2 ± 0.04 | <0.001 |
| 1h-PG (mmol/l) | 9.2 ± 0.11 | 9.5 ± 0.11 | 10.0 ± 0.13 | <0.001 |
| 2h-PG (mmol/l) | 7.0 ± 0.10 | 7.5 ± 0.10 | 7.8 ± 0.10 | <0.001 |
| Hypertension (n,%) | 167 (19.4) | 176 (20.4) | 175 (20.3) | 0.818 |
Data were mean ± SE or median (IQR) for skewed variables or numbers (proportions) for categorical variables.
T2DM, type 2 diabetes mellitus; BMI, body mass index; WC, waist circumference; SBP, systolic blood pressure; DBP, diastolic blood pressure; HDL-c, high-density lipoprotein cholesterol; LDL-c, low-density lipoprotein cholesterol; TC, total cholesterol; TG, triglyceride; TyG index, triglyceride fasting glucose index; FPG, fasting plasma glucose; 1h-PG, 1-hour plasma glucose concentration; 2h-PG, 2-hour plasma glucose concentration.