Table 2:
Changes in nodule volume and percentage volume reduction before and after RFA
| Period | No. of Nodules | Mean Volume (mL) | % Volume Reductiona | P Valueb |
|---|---|---|---|---|
| Before treatment | 375 | 5.4 ± 7.1 | ||
| 1 mo | 375 | 3.1 ± 4.4 | 37.5 ± 43.4 | .030 |
| 3 mo | 301 | 2.1 ± 3.0 | 61.3 ± 37.6 | .025 |
| 6 mo | 247 | 1.2 ± 1.9 | 74.6 ± 23.3 | .009 |
| 12 mo | 194 | 0.4 ± 0.7 | 84.8 ± 17.1 | .002 |
a
Note that “% Volume Reduction” represents the proportion of residual volume compared with the index nodule volume.
b
P value represents a comparison of before treatment with each follow-up assessment.