Table 1.
Core laboratory coronary artery segment visualization rates by study month. Time from study start to echocardiogram acquisition was analyzed as a continuous variable as well as in 9-month time blocks.
| CA segment | Overall (%)* |
Visualized (%) | Categorical | Continuous | ||
|---|---|---|---|---|---|---|
| 0–9 months |
10–18 months |
19–27 months |
P-value | P-value | ||
| N | 589 | 254 | 225 | 110 | ||
| LMCA | 583 (99) | 98 | 99 | 100 | 0.80 | 0.18 |
| Proximal LAD | 579 (98) | 98 | 99 | 99 | 0.55 | 0.15 |
| Distal LAD | 538 (91) | 91 | 91 | 93 | 0.86 | 0.44 |
| Proximal RCA | 576 (98) | 98 | 98 | 97 | 0.84 | 0.81 |
| Distal RCA | 385 (65) | 59 | 72 | 67 | 0.08 | 0.03 |
| Circumflex | 509 (86) | 82 | 89 | 91 | 0.12 | 0.03 |
| PD | 316 (54) | 48 | 61 | 52 | 0.05 | 0.12 |
CA: coronary artery; LAD: left anterior descending; LMCA: left main coronary artery; PD: posterior descending; RCA: right coronary artery
*
Counts indicate number of echocardiograms, not number of subjects