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| SS group (n=130) | RFA group (n=20) | P value | |
|---|---|---|---|
| Preoperative BNP value (pg/dl) | 39.71±51.52 | 32.22±22.97 | 0.5339 |
| Postoperative BNP value (pg/dl) (after 1 month) | 30.37±44.92 | 24.67±13.13 | 0.5840 |
| P value | 0.0184 | <0.0001 |
SS: short stripping of saphenous veins; RFA: radiofrequency ablation; BNP: brain natriuretic peptide
