Table 2. The basic variables of the 441 patients with chronic coronary syndrome.
| Patients (n) | % [95% CI] | |
|---|---|---|
| Age in years, mean ± SD | 69.8 + 13.5 | |
| Number of women | 115/423 | 27.2 [23.0; 31.7] |
| Diabetes mellitus | 151/407 | 37.1 [32.4; 42.0] |
| Previous PCI | 227/406 | 55.9 [50.9; 60.8] |
| Status post myocardial infarction | 142/394 | 36.0 [31.3; 41.0] |
| Left ventricular ejection fraction | ||
| –normal (> 50%) | 225/375 | 60.0 [54.8; 65.0] |
| –slightly reduced (40–50%) | 72/375 | 19.2 [15.3; 23.6] |
| –severely reduced (< 40%) | 78/375 | 20.8 [15.1; 27.8] |
| Status post stroke | 34/392 | 8.7 [6.1; 11.9] |
| Renal insufficiency with eGFR < 60 mL/min/1.73 m2 | 132/380 | 34.7 [30.0; 39.8] |
| Chest pain | 354/441 | 80.3 [76.2; 83.9] |
| No symptoms | 44/441 | 10.0 [7.3; 13.2] |
| Drug treatment according to the guidelines | 306/403 | 75.9 [71.5; 80.0] |
| Persistent symptoms despite treatment according to the guidelines | 170/304 | 55.9 [50.1; 61.6] |
CI, Confidence interval; eGFR, estimated glomerular filtration rate; n, number; PCI, percutaneous coronary intervention; SD, standard deviation