Table 2.
Characteristics of the Propensity Score-Matched Patients
| Factor | SBRT | Surgery | P-value |
|---|---|---|---|
| Number | 66 | 66 | |
| Age (years) | .83 | ||
| Median (range) | 68 (49–85) | 68 (40–83) | |
| Gender | .86 | ||
| Male | 43 | 42 | |
| Female | 23 | 24 | |
| Tumor size (cm) | .47 | ||
| Median (range) | 2.0 (0.7–5.3) | 2.2 (0.8–4.0) | |
| Pathology | .96 | ||
| Ade | 38 (57) | 38 (57) | |
| SCC | 21 (32) | 20 (31) | |
| Others | 7 (11) | 8 (12) | |
| FEV1 | .15 | ||
| Median (range) | 1.60 (0.44–2.73) | 1.67 (0.77–3.25) | |
| FEV1/FVC (%) | .81 | ||
| Median (range) | 102 (55–129) | 101 (54–123) | |
| CCI (%) | .64 | ||
| 0 | 37 (56) | 38 (58) | |
| 1 | 12 (18) | 12 (18) | |
| 2 | 13 (20) | 8 (12) | |
| 3 | 2 (3) | 4 (6) | |
| 4 | 2 (3) | 4 (6) | |
| ≥5 | 0 (0) | 0 (0) | |
| KPS | .27 | ||
| Median (range) | 90 (70–100) | 90 (80–100) |
SBRT: stereotactic body radiotherapy, Ade: adenocarcinoma, SCC: squamous cell carcinoma, FEV1: forced expiratory volume in 1 second, FEV1/FVC%: FEV1 and forced vital capacity ratio, CCI: Charlson comorbidity index, KPS: Karnofsky performance status.