Demographic characteristics of the experimental subjects
| Surgery (n = 200) | RFA (n = 200) | P Value | |
|---|---|---|---|
| Mean age (yr) (range) | 52.4 ± 13.9 (23–78) | 43.8 ± 12.7 (15–84) | .76 |
| Sex (M/F) | 46:154 | 35:165 | .89 |
| Index nodules | 403 | 375 | |
| Mean diameter (cm) | 4.1 ± 3.2 | 3.4 ± 3.7 | .79 |
| Mean volume (mL) | 5.9 ± 6.4 | 5.4 ± 7.1 | .88 |
| No. of nodules (single/multiple) | 49:151 | 62:138 | .147 |