Clinical characteristics of echocardiography patients
| Clinical characteristics | 2010 (n=74 400), % | 2014 (n=71 467), % | P value |
| Age (years) | 67.8±12.1 | 67.5±11.0 | 0.47 |
| Male | 72.3 | 76.5 | <0.001 |
| BMI >30 | 33.2 | 28.2±5.5 | 0.63 |
| Hypertension | 65.9 | 63.2 | 0.11 |
| Hypercholesterolaemia | 78.5 | 61.5 | <0.001 |
| Diabetes mellitus | 22.9 | 24.1 | 0.40 |
| Current smoker | 10.3 | 9.39 | <0.001 |
| Previous myocardial infarction | 21.7 | 23.1 | 0.33 |
| Previous CABG | 8.7 | 11.6 | 0.007 |
| Previous PCI | 18.7 | 31.8 | <0.001 |
| Cerebrovascular disease | 8.2 | 7.0 | 0.21 |
| Renal failure (Cr >0.20 mmol/L) | 4.9 | 4.1 | 0.25 |
BMI, body mass index; CABG, coronary artery bypass grafting; Cr, creatinine; PCI, percutaneous coronary intervention.