Table 1 Patient characteristics
Variable | Reproducibility cohort | Contemporaneous echocardiography cohort |
|---|---|---|
|  | Frequency or median (interquartile range) N = 1044 | Frequency or median (interquartile range) N = 444 |
Demographics | Â | Â |
Age (years) | 54 (42–65) | 55 (44–65) |
Female | 41% | 36% |
White race | 88% | 88% |
Black race | 8.5% | 8.1% |
General Indication for CMR exam | Â | Â |
Known or suspected cardiomyopathy | 31% | 36% |
Possible coronary disease (stress testing or viability) | 31% | 30% |
Vasodilator stress testing | 17% | 17% |
Evaluation for arrhythmia substrate | 21% | 25% |
Mass or thrombus | 3% | 3% |
Hospitalization status | Â | Â |
Inpatient | 33% | 36% |
Comorbidity | Â | Â |
Hypertension | 45% | 51% |
Diabetes | 17% | 19% |
Dyslipidemia | 35% | 37% |
Current cigarette smoking | 15% | 20% |
Atrial fibrillation or flutter | 6% | 8% |
Body mass index (kg/m2) | 28.1 (24.4-33.4) | 28.1 (24.1-33.2) |
Obstructive coronary artery disease (>70% by angiography) | 19% | 20% |
Prior coronary bypass | 8% | 8% |
Prior percutaneous coronary intervention | 14% | 15% |
Prior heart failure documented in medical records | 18% | 22% |
Laboratory, CMR, or Echocardiography data | Â | Â |
Glomerular filtration rate (mL/min/1.73 m2) | 82 (66–102) | 81 (66–105) |
Ejection fraction by echocardiography (%) | 58 (34–63) | 58 (38–63) |
Ejection fraction by CMR (%) | 58 (47–65) | 55 (38–63) |
Late gadolinium enhancement (LGE) | 42% | 52% |
Myocardial infarction by LGE | 19% | 22% |