Table 2.
Results by device type
| Device Efficacy | Manual | Powered | p-value |
|---|---|---|---|
| Able to acquire biopsy core specimen | 98.0% | 90.4% | 0.205 |
| Mean number attempts for core acquisition | 1.5 ± 0.8 | 1.2 ± 0.5 | 0.112 |
| Mean time core acquisition (seconds) | 203.1 ± 149.5 | 102.1 ± 85.4 | 0.000* |
| Patient Pain Scores | Manual | Powered | p-value |
| Mean VAS needle insertion (0-10) | 3.2 ± 2.9 | 3.1 ± 3.1 | 0.900 |
| Mean VAS overall (0-10) | 3.5 ± 2.3 | 3.8 ± 2.8 | 0.623 |
| Pain-free patients 24 hours post procedure | 33.3% | 66.7% | 0.003* |
| Pain-free patients 7 days post procedure | 76.1% | 82.6% | 0.607 |
| Satisfaction & Complications | Manual | Powered | p-value |
| Operator satisfaction (0-10) | 7.8 ± 2.1 | 8.1 ± 1.7 | 0.488 |
| Patient satisfaction (0-10) | 9.3 ± 1.6 | 9.4 ± 1.2 | 0.778 |
| Device related complications | 0% | 3.8% | 0.495 |
| Core Biopsy Pathology Assessment | Manual | Powered | p-value |
| Mean length (mm) | 11.0 ± 5.5 | 13.3 ± 6.6 | 0.368 |
| Mean width (mm) | 1.3 ± 0.5 | 1.7 ± 0.5 | 0.123 |
| Mean volume (mm3) | 20.4 ± 9.0 | 36.8 ± 21.2 | 0.039* |
| General quality excellent/good | 80.0% | 66.7% | 0.628 |
| Medullary quality excellent/good | 70.0% | 55.6% | 0.650 |
| Overall quality rated adequate | 70.0% | 77.8% | 1.000 |
*denotes statistical significance