Table 1.
The baseline characteristics based on tertiles of the TyG index
| Variable | T1 (n = 341) | T2 (n = 331) | T3 (n = 335) | P value |
|---|---|---|---|---|
| Age, years | 67.75 ± 11.64 | 65.80 ± 11.40 | 66.07 ± 11.13 | 0.055 |
| Female, n (%) | 72 (21.1) | 87 (26.3) | 125 (37.3) | < 0.001 |
| BMI, kg/m2 | 23.63 ± 2.88 | 24.69 ± 2.73 | 24.64 ± 2.83 | < 0.001 |
| Smoking, n (%) | 189 (55.4) | 196 (59.2) | 168(50.1) | 0.061 |
| Previous PCI, n (%) | 32 (9.4) | 25 (7.6) | 27 (8.1) | 0.674 |
| COPD, n (%) | 22 (6.5) | 19 (5.7) | 14 (4.2) | 0.414 |
| Hypertension, n (%) | 216 (63.3) | 219 (66.2) | 220 (65.7) | 0.714 |
| Diabetes mellitus, n (%) | 51 (15.0) | 118 (35.6) | 191 (57.0) | < 0.001 |
| AF, n (%) | 22 (6.5) | 20 (6.0) | 24 (7.2) | 0.839 |
| Previous Stroke, n (%) | 28 (8.2) | 25 (7.6) | 24 (7.2) | 0.874 |
| SBP, mmHg | 131.28 ± 19.96 | 132.73 ± 22.32 | 132.70 ± 22.00 | 0.602 |
| HR, bpm | 76.21 ± 14.13 | 78.14 ± 15.33 | 78.84 ± 14.79 | 0.056 |
| cTnT, pg/ml | 32.53 (11.18, 899.45) | 30.47 (11.50, 534.50) | 64.79 (13.48, 1178.00) | 0.094 |
| BNP, pg/ml | 109.90 (46.45, 300.85) | 95.5 (31.6, 242.75) | 118.75 (39.6, 379.85) | 0.028 |
| Scr, umol/L | 77.60 (66.25, 90.30) | 77.00 (65.60, 91.60) | 73.90 (61.30, 93.10) | 0.335 |
| FBG, mmol/L | 5.44 ± 1.20 | 6.46 ± 1.79 | 8.97 ± 3.58 | < 0.001 |
| TG, mmol/L | 0.99 ± 0.29 | 1.61 ± 0.42 | 2.22 ± 0.89 | < 0.001 |
| TC, mmol/L | 4.09 ± 1.09 | 4.59 ± 1.29 | 4.75 ± 1.19 | < 0.001 |
| HDL-C, mmol/L | 1.22 ± 0.33 | 1.12 ± 0.26 | 1.12 ± 0.27 | < 0.001 |
| LDL-C, mmol/L | 2.49 ± 0.82 | 2.87 ± 0.95 | 2.95 ± 0.86 | < 0.001 |
| AMI, n (%) | 174 (51.0) | 171 (51.7) | 193 (57.6) | 0.168 |
| Diagnosis, n (%) | 0.137 | |||
| UA | 167 (49.0) | 160 (48.3) | 142 (42.4) | |
| NSTEMI | 65 (19.1) | 81 (24.5) | 83 (24.8) | |
| STEMI | 109 (32.0) | 90 (27.2) | 110 (32.8) | |
| Angiographic data | ||||
| MVD, n (%) | 204 (59.8) | 228 (68.9) | 253 (75.5) | < 0.001 |
| LM, n (%) | 4 (1.2) | 23(6.9) | 27 (8.1) | < 0.001 |
| Calcified lesions, n (%) | 41 (12.0) | 41(12.4) | 56 (16.7) | 0.144 |
| Thrombosis, n (%) | 24 (7.0) | 24(7.3) | 36 (10.7) | 0.149 |
| Long lesion, n (%) | 132 (38.7) | 149(45.0) | 177 (52.8) | 0.001 |
| CTO, n (%) | 57 (16.7) | 69(20.8) | 82 (24.5) | 0.045 |
| Number of stents | 1.32 ± 0.75 | 1.42 ± 0.88 | 1.63 ± 0.99 | < 0.001 |
| Length of stents, mm | 34.12 ± 22.73 | 37.02 ± 26.50 | 43.94 ± 29.75 | < 0.001 |
| bSS | 11.00 (7.00, 17.5) | 13(8.00, 20.00) | 16.00 (10.00, 23.50) | < 0.001 |
| TyG index | 8.30 ± 0.30 | 8.95 ± 1.15 | 9.54 ± 0.32 | < 0.001 |
The groups were stratified by the tertiles of the TyG index (T1, TyG ≤ 8.67; T2, 8.67 < TyG ≤ 9.18; T3, TyG > 9.18). BMI body mass index, COPD chronic obstructive pulmonary disease, AF atrial fibrillation, SBP systolic blood pressure, HR heart rate, BNP brain natriuretic peptide, Scr serum creatinine, FBG fasting blood glucose, TG triglyceride, TC total cholesterol, HDL-C high density lipoprotein, LDL-C low density lipoprotein, UA unstable angina, STEMI ST-segment elevation myocardial infarction, NSTEMI non-ST-segment elevation myocardial infarction, MVD multivessel disease, LM left main disease, CTO chronic total occlusion, bSS baseline SYNTAX score, TyG index, the triglyceride–glucose index. Data are presented as mean ± SD, median (IQR) or n (%)