Table 1. Baseline demographic characteristics of the population.
| ACS |
SA |
|||||
| ≥ 75 yrs n = 155 |
< 75 yrs n = 604 |
P | ≥ 75 yrs n = 58 |
< 75 yrs n = 218 |
P | |
| Age (yrs) | 79.24 ± 3.51 | 59.81 ± 8.76 | < 0.01 | 78.72 ± 2.72 | 61.83 ± 7.55 | < 0.01 |
| Weight (Kg) | 61.94 ± 8.20 | 69.3 ± 10.27 | < 0.01 | 66.69 ± 9.59 | 69.76 ± 12.07 | < 0.05 |
| Female | 62 (40.0%) | 113 (18.7%) | < 0.01 | 17 (29.3%) | 55 (25.2%) | 0.318 |
| Smoking | 34 (21.9%) | 338 (56.0%) | < 0.01 | 15 (25.9%) | 91 (41.7%) | < 0.05 |
| Comorbidities | ||||||
| Hypertension | 116 (74.8%) | 393 (65.1%) | < 0.05 | 49 (84.5%) | 148 (67.9%) | < 0.01 |
| Diabetes mellitus | 40 (25.8%) | 131 (21.7%) | 0.282 | 15 (25.9%) | 72 (33.0%) | 0.342 |
| Chronic kidney disease | 11 (7.1%) | 21 (3.5%) | < 0.05 | 1 (1.7%) | 4 (1.8%) | 0.955 |
| Chronic obstructive pulmonary disease | 11 (7.1%) | 14 (2.3%) | < 0.01 | 6 (10.3%) | 5 (2.3%) | < 0.05 |
| Peripheral vascular disease | 17 (11.0%) | 37 (6.1%) | < 0.05 | 10 (17.2%) | 21 (9.6%) | 0.103 |
| Dyslipidemia | 10 (6.5%) | 63 (10.4%) | 0.134 | 4 (6.9%) | 21 (9.6%) | 0.519 |
| Related medical history | ||||||
| Prior myocardial infarction | 6 (3.9%) | 44 (7.3%) | 0.126 | 5 (8.6%) | 32 (14.7%) | 0.229 |
| Prior Stroke | 25 (16.1%) | 45 (7.5%) | < 0.01 | 14 (24.1%) | 14 (6.4%) | < 0.01 |
| Prior PCI/CABG | 5 (3.2%) | 48 (7.9%) | < 0.05 | 5 (8.6%) | 27 (12.4%) | 0.426 |
| Cardiogenic shock at admission | 26 (16.8%) | 28 (4.6%) | < 0.01 | 2 (3.4%) | 5 (2.3%) | 0.982 |
| Severe arrhythmia at admission | 33 (21.3%) | 59 (9.8%) | < 0.01 | 9 (15.5%) | 17 (7.8%) | 0.074 |
ACS: acute coronary syndrome; CABG: coronary artery bypass grafting; MACE: major adverse cardiovascular event; PCI: percutaneous coronary intervention; SA: stable angina.