Table 2.
Characteristics of propensity score-matched patients in MWA group and control group.
| Variables | MWA (n = 21) | Control (n = 42) | P value |
|---|---|---|---|
| Mean age (y) | 54.19 (38-72) | 52.95 (32-73) | 0.6559 |
| ≤50 | 9 (42.9%) | 17 (40.5%) | 0.856 |
| >50 | 12 (57.1%) | 25 (59.5%) | |
| Mean tumor size in US | 20.9 (6-37) | 20.5 (8-42) | 0.8685 |
| ≤2 cm | 11 (52.4%) | 27 (64.3%) | 0.363 |
| >2 cm | 10 (47.6%) | 15 (35.7%) | |
| Tumor location | |||
| Lateral-superior | 11 (52.4%) | 23 (54.8%) | 0.781* |
| Interior-superior | 7 (33.3%) | 10 (23.8%) | |
| Lateral-inferior | 3 (14.3%) | 7 (16.7%) | |
| Interior-inferior | 0 (0%) | 2 (4.8%) | |
| Molecular subtype | |||
| HR positive and HER2 negative | 10 (47.6%) | 22 (52.4%) | 0.882* |
| HER2 positive | 4 (19.0%) | 9 (21.4%) | |
| Triple negative | 7 (33.3%) | 11 (26.2%) |
*Fisher’s exact test.
HR, hormone receptor; MWA, microwave ablation; US, ultrasound.