B-type natriuretic peptide | Quintile 1 (0 - 25.2) (n = 111) | Quintile 2 (25.3 – 53.6 ) (n =111) | Quintile 3 (53.7 – 108.3) (n =111) | Quintile 4 (109.2 – 240.4) (n = 111) | Quintile 5 (258 - 4000) (n = 110) | Trend test |
---|---|---|---|---|---|---|
Mean age (SD) | 59.0 (9.7) | 57.5 (11.4) | 60.8 (12.1) | 61.2 (11.3) | 61.5 (11.0) | P=0.001 |
Males (%) | 78.3 | 76.5 | 71.1 | 68.4 | 74.5 | P = 0.23 |
Residents in a city with an altitude of 2000- 3000 m (%) | 85.6 | 81.0 | 80.1 | 81.0 | 82.7 | P = 0.64 |
Mean ejection fraction (%) | 54.0 (9.2) | 53.8 (11.3) | 54.2 (11.1) | 51.2 (11.0) | 45.1 (12.7) | P = 0.001 |
Diabetes mellitus (%) | 23.4 | 18.9 | 15.3 | 17.1 | 25.4 | P = 0.86 |
Acute coronary syndrome ≤ 30 days (%) | 14.4 | 35.1 | 31.5 | 42.3 | 47.2 | P = 0.001 |
Obesity (%) | 25.2 | 16.2 | 19.8 | 17.1 | 10.9 | P = 0.02 |
Previous cardiac surgery (%) | 5.4 | 6.3 | 8.1 | 5.4 | 7.2 | P = 0.7 |
Proportion of patients undergoing CABG (%) | 72.9 | 79.2 | 68.4 | 71.1 | 57.2 | P = 0.001 |