Table 1.
Baseline characteristics of study population.
| Parameter | Total Sample n = 910 |
STS ≥ 8 n = 115 (12.6%) |
STS < 8 n = 795 (87.4%) |
p |
|---|---|---|---|---|
| Age, years | 82 (24–97) | 83 (52–91) | 81 (64–89) | 0.001 |
| Logistic EuroSCORE, % | 15.3 (16.4) | 28.0 (21.8) | 13.8 (14.0) | <0.001 |
| EuroSCORE II, % | 4.6 (5.3) | 11.0 (8.4) | 4.0 (3.9) | 0.002 |
| STS score, % | 3.5 (3.5) | 10.5 (2.4) | 3.2 (2.3) | <0.001 |
| Male, n (%) | 419 (46.0%) | 53 (46.1%) | 366 (46.0%) | 0.99 |
| BMI, kg/m2 | 25.4 (5.7) | 24.1 (5.5) | 25.5 (5.7) | 0.23 |
| eGFR (mL/min/1.72 m2) | 47.7 (28.1) | 35.1 (19.2) | 50.1 (28.3) | <0.001 |
| Anemia, n (%) | 455 (50.0%) | 65 (56.5%) | 390 (49.2%) | 0.14 |
| Dyslipidaemia, n (%) | 506 (55.6%) | 78 (67.8%) | 428 (55.0%) | 0.01 |
| COPD, n (%) | 149 (16.4%) | 38 (33.9%) | 111 (14.3%) | <0.001 |
| Diabetes, n (%) | 255 (28.0%) | 46 (40.4%) | 209 (26.9%) | 0.003 |
| Hypertension, n (%) | 766 (84.2%) | 103 (90.4%) | 663 (85.1%) | 0.13 |
| Previous AMI, n (%) | 136 (14.9%) | 26 (23.0%) | 110 (14.2%) | 0.01 |
| Atrial fibrillation, n (%) | 343 (37.7%) | 49 (42.6%) | 294 (37.9%) | 0.34 |
| Previous stroke, n (%) | 65 (7.1%) | 12 (10.4%) | 53 (6.8%) | 0.16 |
| PVD, n (%) | 302 (33.2%) | 64 (55.7%) | 238 (30.6%) | <0.001 |
| CAD, n (%) | 418 (45.9%) | 74 (64.3%) | 344 (42.9%) | <0.001 |
| Previous CABG, n (%) | 94 (10.3%) | 19 (16.5%) | 75 (9.6%) | 0.025 |
| Previous AVR, n (%) | 59 (6.5%) | 7 (6.1%) | 52 (6.7%) | 0.81 |
| Previous MVR, n (%) | 47 (5.2%) | 6 (5.2%) | 41 (5.3%) | 0.99 |
| PM, n (%) | 109 (12.0%) | 16 (13.9%) | 93 (11.7%) | 0.49 |
| Syncope, n (%) | 163 (17.9%) | 33 (28.7%) | 130 (16.7%) | 0.002 |
| Stable angina, n (%) | 157 (17.3%) | 42 (36.5%) | 115 (14.7%) | <0.001 |
| Unstable angina, n (%) | 43 (4.7%) | 12 (10.4%) | 31 (4.0%) | 0.002 |
| Cardiogenic shock or APE, n (%) | 121 (13.3%) | 49 (42.6%) | 72 (9.2%) | <0.001 |
| NYHA class I or II, n (%) | 239 (26.2%) | 16 (13.9%) | 223 (30.3%) | <0.001 |
| NYHA class III or IV, n (%) | 671 (73.8%) | 99 (86.0%) | 572 (71.9%) | <0.001 |
| Prior PCI, n (%) | 143 (15.7%) | 30 (26.1%) | 113 (14.2%) | 0.001 |
BMI: body mass index; eGFR: estimated glomerular filtration rate; COPD: chronic obstructive pulmonary disease; PVD: peripheral vascular disease; CAD: coronary artery disease; CABG: coronary artery bypass grafting; AVR: aortic valve replacement; MVR: mitral valve replacement; PM: pacemaker; APE: acute pulmonary edema; NYHA: New York Heart Association; PCI: percutaneous coronary intervention. Categorical data are presented as numbers and percentages; continuous data are presented as means ± standard deviations for normally distributed variables, and as median and interquartile range otherwise. Age is presented as mean and range (min-max).