Table 1.
Clinical characteristics of STEMI patients on admission.
| Variables | Total (n = 39915) | Reinfarction (n = 153) | Non-reinfarction (n = 39762) | p value |
|---|---|---|---|---|
| Female (%) (n) | 21.7 (8678) | 34 (52) | 21.7 (8626) | <0.001 |
| Age (y), mean (SD) | 61.65 (12.6) | 67.60 (11.1) | 61.63 (12.6) | <0.001 |
| BMI, median (quartile) | 24.34 (3.63) | 23.80 (4.01) | 24.34 (3.62) | 0.208 |
| SBP (mmHg), mean (SD) | 127.11 (23.4) | 129.58 (26.1) | 127.09 (23.4) | 0.242 |
| DBP (mmHg), mean (SD) | 77.55 (14.7) | 77.52 (15.4) | 77.55 (14.7) | 0.981 |
| HR (bpm), mean (SD) | 77.97 (16.5) | 82.94 (17.9) | 77.96 (16.5) | 0.001 |
| Cardiac shock (%) (n) | 4.1 (1628) | 11.8 (18) | 4.0 (1610) | <0.001 |
| Heart failure (%) (n) | 8.9 (3511) | 18.0 (27) | 8.9 (3484) | <0.001 |
| Cardiac arrest (%) (n) | 2.7 (1046) | 7.9 (12) | 2.6 (1034) | 0.001 |
| Killip class (%) (n) | <0.001 | |||
| I | 70.6 (26853) | 60 (90) | 70.6 (26763) | — |
| II-III | 24.8 (9428) | 28.0 (42) | 24.8 (9386) | — |
| IV | 4.6 (1754) | 12.0 (18) | 4.6 (1736) | — |
| Transfer (%) (n) | 51.6 (20598) | 43.1 (66) | 51.6 (20532) | 0.036 |
| Mortality (%) (n) | 2.3 (905) | 30.7 (47) | 2.2 (858) | <0.001 |
| Smoking (%) (n) | 47.3 (18885) | 37.9 (58) | 47.3 (18827) | 0.002 |
| MI history (%) (n) | 5.2 (2071) | 20.3 (31) | 5.1 (2040) | <0.001 |
| PCI history (%) (n) | 4.5 (1788) | 15.0 (23) | 4.4 (1765) | <0.001 |
| CABG history (%) (n) | 0.2 (90) | 0.7 (1) | 0.2 (89) | 0.791 |
| CHD family history (%) (n) | 2.5 (1008) | 1.3 (2) | 2.5 (1006) | 0.481 |
| Atrial fibrillation (%) (n) | 1.5 (582) | 2.0 (3) | 1.5 (579) | 0.856 |
| Heart failure history (%) (n) | 0.9 (378) | 5.9 (9) | 0.9 (369) | 0.001 |
| COPD history (%) (n) | 1.3 (523) | 4.6 (7) | 1.3 (516) | 0.001 |
| Renal failure (%) (n) | 1.1 (425) | 3.9 (6) | 1.1 (419) | 0.001 |
| Insufficient renal function (%) (n) | 22.3 (5818) | 37.0 (37) | 22.3 (5781) | <0.001 |
| Valvular disease history (%) (n) | 0.1 (41) | 0.7 (1) | 0.1 (40) | 0.386 |
| Peripheral artery disease (%) (n) | 0.6 (247) | 0.7 (1) | 0.6 (246) | 1 |
| Stroke (%) (n) | 8.6 (3447) | 14.4 (22) | 8.6 (3425) | 0.011 |
| Hypertension (%) (n) | 64.2 (25456) | 75.2 (115) | 64.1 (25341) | 0.004 |
| Diabetes (%) (n) | 47.0 (17436) | 56.4 (79) | 47.0 (17357) | 0.026 |
| Elevated fasting glucose (%) (n) | 35.2 (12817) | 42.4 (56) | 35.2 (12761) | 0.082 |
| Elevated HbA1c (%) (n) | 37.2 (13868) | 43.1 (59) | 37.2 (13809) | 0.157 |
| Dyslipidaemia (%) (n) | 95.8 (35292) | 95.0 (134) | 95.8 (35158) | 0.655 |
| Elevated LDL (%) (n) | 86.8 (31222) | 86.6 (116) | 86.8 (31106) | 0.946 |
| Lowered HDL (%) (n) | 46.2 (16668) | 36.3 (49) | 46.2 (16619) | 0.021 |
| Elevated TG (%) (n) | 18.6 (6765) | 12.6 (17) | 18.7 (6748) | 0.071 |
| Anaemia (%) (n) | 19.8 (7262) | 32.6 (46) | 19.8 (7216) | <0.001 |
| Reduced LVEF (%) (n) | 31.2 (9637) | 50.9 (57) | 31.3 (9580) | <0.001 |
Abbreviations: OR = odds ratio; CI = confidence interval; BMI = body mass index; SBP = systolic blood pressure; DBP = diastolic blood pressure; HR = heart rate; MI = myocardial infarction; PCI = percutaneous coronary intervention; CABG = coronary artery bypass grafting; CHD = coronary heart disease; COPD = chronic obstructive pulmonary disease; LDL = low-density lipoprotein; HDL = high-density lipoprotein; TG = triglyceride.