Table 4.
Surgical Procedure Variables
| Variablea | RFA (n=255) | TBA (n=200) | P values |
|---|---|---|---|
| General anesthesia | 108 (42%) | 174 (88%) | <.001 |
| ASA physical status III or higher | 6 (2%) | 9 (5%) | .29 |
| Admission to postanesthesia care unit | 113 (44%) | 76 (38%) | .18 |
| Duration of the procedure, min | 35.6 (22) | 43.5 (26) | .006 |
| Preprocedure dilation and curettage | 177 (69%) | 142 (71%) | .68 |
| RFA power setting, watts | 128.5 (30.8) | NA | … |
| RFA coagulation, s | 81.0 (22.1) | NA | … |
| TBA balloon fluid volume, mL | NA | 16.3 (7.6) | … |
| TBA balloon pressure, mm Hg | NA | 163.2 (16.6) | … |
Abbreviations: ASA, American Society of Anesthesia; NA, not applicable; RFA, radiofrequency ablation; TBA, thermal balloon ablation.
a
Categorical data are presented as number of patients (percentage of sample); continuous data are presented as mean (SD).