Table 1.
Baseline characteristics of participants according to quartiles of TyG index
| Characteristics | Quartiles of TyG index | P for trend | |||
|---|---|---|---|---|---|
| Q1(6.81–8.10) | Q2(8.10–8.52) | Q3(8.52–9.02) | Q4(9.02–13.17) | ||
| Age, yearsa | 43.6 ± 11.0 | 47.0 ± 12.1 | 49.3 ± 12.9 | 48.1 ± 12.4 | < 0.001 |
| Male, n (%)b | 484 (32.2) | 750 (49.7) | 907 (60.2) | 1040 (69.0) | < 0.001 |
| Active physical activity, n (%)b | 231 (15.3) | 237 (15.7) | 291 (19.3) | 262 (17.4) | 0.025 |
| Current smoker, n (%)b | 245 (16.3) | 378 (25.0) | 448 (29.7) | 541 (35.9) | < 0.001 |
| Current alcohol use, n (%)b | 206 (13.7) | 290 (19.2) | 344 (22.8) | 448 (29.7) | < 0.001 |
| BMI, kg/m2 a | 23.1 ± 3.1 | 24.3 ± 3.1 | 25.2 ± 3.4 | 26.3 ± 3.4 | < 0.001 |
| Waist circumference, cm c | 78 (72–85) | 83 (76–89) | 86 (80–92) | 90 (83–96) | < 0.001 |
| FBG, mmol/Lc | 4.9 (4.5–5.2) | 5.1 (4.7–5.4) | 5.2 (4.9–5.7) | 5.6 (5.1–6.3) | < 0.001 |
| SBP, mmHg c | 116.7 (105.0–128.7) | 120.0 (110.0–131.7) | 129.3 (117.7–140.0) | 130.0 (120.0–140.0) | < 0.001 |
| DBP, mmHg c | 77.0 (70.0–81.3) | 80.0 (71.3–87.0) | 80.7 (76.7–90.0) | 84.0 (80.0–90.3) | < 0.001 |
| MAP, mmHg c | 90.0 (81.3–96.7) | 93.3 (86.7–101.7) | 96.7 (90.0–106.0) | 100.0 (93.3–108.2) | < 0.001 |
| TC, mmol/Lc | 4.4 (4.0–5.0) | 4.8 (4.2–5.3) | 5.1 (4.5–5.7) | 5.3 (4.7–6.0) | < 0.001 |
| TG, mmol/Lc | 0.6 (0.6–0.8) | 1.0 (0.9–1.1) | 1.5 (1.3–1.7) | 2.7 (2.1–3.8) | < 0.001 |
| HDL, mmol/Lc | 1.6 (1.4–1.9) | 1.5 (1.3–1.8) | 1.4 (1.2–1.8) | 1.3 (1.1–1.6) | < 0.001 |
| LDL, mmol/Lc | 2.2 (1.8–2.6) | 2.5 (2.1–3.0) | 2.7 (2.2–3.2) | 2.7 (2.1–3.3) | < 0.001 |
| TyG indexa | 7.8 ± 0.2 | 8.3 ± 0.1 | 8.7 ± 0.1 | 9.6 ± 0.5 | < 0.001 |
| hs-CRPa | 1.6 ± 3.7 | 1.7 ± 2.9 | 2.2 ± 4.5 | 2.3 ± 3.2 | < 0.001 |
| baPWV, cm/s a | 1301.1 ± 266.5 | 1399.8 ± 276.5 | 1491.5 ± 323.1 | 1540.1 ± 324.7 | < 0.001 |
| Diabetes, n (%)b | 2 (0.1) | 15 (1.0) | 59 (3.9) | 258 (17.1) | < 0.001 |
| Hypertension, n (%)b | 263 (17.5) | 440 (29.2) | 646 (42.9) | 771 (51.2) | < 0.001 |
N = 6028; Q quartiles, BMI body mass index, FBG fasting blood glucose, SBP systolic blood pressure, DBP diastolic blood pressure;, MAP mean arterial blood pressure, TC total cholesterol, TG triglyceride, HDL high-density lipoprotein, LDL low-density lipoprotein, TyG index triglyceride–glucose index, hs-CRP high-sensitivity C-reactive protein, baPWV brachial-ankle pulse wave velocity; amean ± standard deviation, and the variables were tested by one-way analysis of variance for linear trend; bthe variables were tested by chi-square test for linear trend; cmedian (interquartile range), and the variables were tested by Kruskal–Wallis test