Table 7.
Hazard ratios after adjusting for confounding factors (before PSM).
| Age >65 | Age ≤65 | |||||
|---|---|---|---|---|---|---|
| Size group | p | Hazard ratio | 95% CI | p | Hazard ratio | 95% CI |
| 0–20 mm | ||||||
| RFA vs. HR (OS) | 0.28 | 1.17 | 0.88–1.56 | 0.001 | 1.51 | 1.18–1.92 |
| RFA vs. HR (DSS) | 0.52 | 1.15 | 0.76–1.73 | 0.003 | 1.63 | 1.18–2.25 |
| 21–30 mm | ||||||
| RFA vs. HR (OS) | 0.004 | 1.38 | 1.11–1.71 | <0.001 | 1.64 | 1.34–2.00 |
| RFA vs. HR (DSS) | 0.04 | 1.34 | 1.01–1.77 | 0.008 | 1.40 | 1.09–1.77 |
| 31–50 mm | ||||||
| RFA vs. HR (OS) | <0.001 | 2.01 | 1.64–2.45 | <0.001 | 1.74 | 1.46–2.07 |
| RFA vs. HR (DSS) | <0.001 | 2.04 | 1.62–2.56 | <0.001 | 1.69 | 1.39–2.05 |
HR, Hepatic resection; RFA, Radiofrequency ablation; OS, Overall survival; DSS, Disease-specific survival; PSM, Propensity score matching. Bold type indicates statistical significance.