Table 1.
Comparison of baseline characteristics according to TyG index quartiles
| Characteristics | Quartile 1 < 8.4 (n = 207) |
Quartile 2 ≥ 8.4, < 8.8 (n = 207) |
Quartile 3 ≥ 8.8, < 9.3 (n = 206) |
Quartile 4 ≥ 9.3 (n = 203) |
|---|---|---|---|---|
| TyG index | 8.1 ± 0.2 | 8.6 ± 0.1 | 9.0 ± 0.1 | 9.8 ± 0.5 |
| Age (years) | 63.3 ± 13.5 | 62.7 ± 12.4 | 60.6 ± 13.5 | 58.5 ± 13.0ab |
| Male (%) | 54.6 | 57.5 | 59.7 | 63.1 |
| Diabetes mellitus (%) | 16.9 | 20.8 | 26.7 | 56.2abc |
| Hypertension (%) | 67.1 | 75.8 | 76.1 | 77.3 |
| Coronary artery disease (%) | 15.2 | 18.0 | 22.9 | 24.1 |
| Systolic blood pressure (mmHg) | 133.2 ± 21.3 | 135.7 ± 19.5 | 137.8 ± 18.4 | 134.0 ± 18.1 |
| Diastolic blood pressure (mmHg) | 75.6 ± 11.9 | 76.9 ± 10.9 | 79.0 ± 11.1 | 77.6 ± 11.6 |
| Mean arterial pressure (mmHg) | 94.8 ± 14.0 | 96.5 ± 13.0 | 98.6 ± 12.5 | 96.4 ± 12.8 |
| Body mass index (kg/m2) | 24.6 ± 3.3 | 25.9 ± 3.8a | 26.6 ± 3.6a | 27.5 ± 3.9ab |
| ABI | 1.12 ± 0.13 | 1.13 ± 0.11 | 1.12 ± 0.10 | 1.10 ± 0.13 |
| baPWV (cm/s) | 1717.7 ± 482.5 | 1746.8 ± 401.9 | 1804.2 ± 424.5 | 1739.2 ± 382.0 |
| Laboratory parameters | ||||
| Total cholesterol (mg/dL) | 180.4 ± 34.9 | 188.9 ± 41.5 | 196.0 ± 40.6a | 204.5 ± 51.7ab |
| Hematocrit (%) | 40.4 ± 4.8 | 40.4 ± 6.1 | 41.2 ± 5.0 | 41.1 ± 5.7 |
| eGFR (mL/min/1.73 m2) | 58.7 ± 16.8 | 58.3 ± 17.3 | 58.2 ± 20.7 | 57.2 ± 22.8 |
| Echocardiographic data | ||||
| Observed/predicted LVM (%) | 143.2 ± 38.2 | 147.5 ± 47.5 | 155.4 ± 46.8a | 155.5 ± 48.0a |
| LA diameter (mm) | 36.3 ± 6.3 | 37.9 ± 5.8 | 38.4 ± 6.1a | 38.3 ± 6.0a |
| LVEF (%) | 64.8 ± 11.9 | 64.6 ± 12.9 | 63.1 ± 13.0 | 61.8 ± 14.6 |
Abbreviations. TyG index, Triglyceride-glucose index; ABI, Ankle-brachial index; baPWV, brachial-ankle pulse wave velocity; eGFR, estimated glomerular filtration rate; LVM, left ventricular mass; LA, left atrial; LVEF, left ventricular ejection fraction.
ap < 0.05 compared with Quartile 1
bp < 0.05 compared with Quartile 2
cp < 0.05 compared with Quartile 3