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 |
|
|
| 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 |
|
|
| 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 |
|
|
| Inpatient |
33% |
36% |
| |
|
|
|
Comorbidity |
|
|
| 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 |
|
|
| 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% |