Table 1.
Basic Characteristics of Acute STEMI Patients in China and the United States
| Variables | China (%) (n=32 228) | United States (%) (n=76 117) | Absolute Standardized Difference |
|---|---|---|---|
| Age, y (mean, SD) | 62.58 (12.94) | 63.00 (14.16) | 0.03 |
| Age ≥65 y | 46.67 | 42.89 | 0.08 |
| Female | 25.61 | 32.48 | 0.15 |
| Year | |||
| 2007 | 27.45 | 26.80 | |
| 2008 | 26.86 | 26.02 | |
| 2009 | 22.95 | 25.04 | |
| 2010 | 22.74 | 22.14 | 0.05 |
| Diabetes mellitus | 12.82 | 26.48 | 0.35 |
| Hypertension | 31.32 | 61.62 | 0.64 |
| Cardiac dysrhythmias | 7.75 | 33.85 | 0.68 |
| Congestive heart failure | 24.11 | 19.63 | 0.11 |
| Congenital heart disease | 1.34 | 1.32 | <0.01 |
| Blood transfusion | 4.31 | 6.25 | 0.09 |
| Liver disease | 0.31 | 0.88 | 0.07 |
| Gastrointestinal bleeding | 1.75 | 5.01 | 0.18 |
| Cardiogenic shock | 2.94 | 9.85 | 0.29 |
| PCI | 37.22 | 70.10 | 0.70 |
| CABG | 1.85 | 7.41 | 0.27 |
CABG indicates coronary artery bypass grafting; PCI, percutaneous coronary intervention; SD, standard difference; STEMI, ST‐segment‐elevation myocardial infarction.