Table 1. Baseline characteristics.
| LVH | No LVH | p | |
|---|---|---|---|
| (N=383) | (N=3901) | ||
| Demographics | |||
| Mean age ± SD (years) | 66.6±11.4 | 63.1±11.9 | <0.001 |
| Age > 75 years (%) | 27 | 18 | <0.001 |
| Female (%) | 35 | 31 | 0.06 |
| White (%) | 66 | 79 | <0.001 |
| Body mass index ± SD | 28.1±5.8 | 28.6±6.0 | 0.13 |
| Clinical history (%) | |||
| Obesity | 30 | 33 | 0.14 |
| Smoking | 9.4 | 14 | 0.02 |
| Hypertension | 88 | 68 | <0.001 |
| Diabetes | 31 | 26 | 0.04 |
| Stroke | 0.3 | 0.1 | 0.51 |
| Vascular disease | 21 | 6.6 | <0.001 |
| Creatinine >2.5 mg/dL | 3.7 | 1.7 | 0.009 |
| Dialysis | 3.9 | 1.5 | <0.001 |
| Cardiac history (%) | |||
| Previous CHF | 10 | 6 | <0.001 |
| Prior MI | 37 | 35 | 0.45 |
| Previous cardiac surgery | 18 | 17 | 0.74 |
| Previous PCI | 25 | 26 | 0.84 |
| Clinical presentation (%) | |||
| CHF | 12 | 4.3 | <0.001 |
| MI <6 hours | 2.6 | 4 | 0.17 |
| MI <24 hours | 4.2 | 6.5 | 0.08 |
| Unstable angina | 45 | 42 | 0.27 |
| Heparin <48 hours | 31 | 29 | 0.46 |
| Nitroglycerin <24 hours | 16 | 13 | 0.09 |
| Ventricular arrhythmia | 2.1 | 1.9 | 0.82 |
| Thrombolysis <6 hours | 0.3 | 0.7 | 0.32 |
| Thrombolysis >6 hours | 0.8 | 3.4 | 0.005 |
| Shock | 2.6 | 2.5 | 0.88 |
LVH, left ventricular hypertrophy; CHF, congestive heart failure; MI, myocardial infarction; PCI, percutaneous coronary intervention.