Table 2 Patient characteristics of the matched cohort
Characteristics | Re-irradiation SABR group (N = 20) | Initial SABR group (N = 60) | P-value |
|---|---|---|---|
Age | 0.896 | ||
≤ 75 years | 11 (55.0%) | 36 (60.0%) | |
> 75 years | 9 (45.0%) | 24 (40.0%) | |
Gender | 1.000 | ||
Male | 16 (80.0%) | 48 (80.0%) | |
Female | 4 (20.0%) | 12 (20.0%) | |
Underlying pulmonary disease | 1.000 | ||
No | 12 (60.0%) | 36 (60.0%) | |
Yes | 8 (40.0%) | 24 (40.0%) | |
Age-adjusted Charlson Comorbidity Index | 1.000 | ||
< 10 | 18 (90.0%) | 55 (91.7%) | |
≥ 10 | 2 (10.0%) | 5 (8.3%) | |
Smoking history | 0.778 | ||
No | 5 (25.0%) | 19 (31.7%) | |
Yes | 15 (75.0%) | 41 (68.3%) | |
Current smoking | 1.000 | ||
No | 16 (80.0%) | 50 (83.3%) | |
Yes | 4 (20.0%) | 10 (16.7%) | |
Lung operation history | 1.000 | ||
No | 15 (75.0%) | 44 (73.3%) | |
Yes | 5 (25.0%) | 16 (26.7%) | |
Location | 0.897 | ||
Upper and middle lobe | 10 (50.0%) | 33 (55.0%) | |
Lower lobe | 10 (50.0%) | 27 (45.0%) | |
Centrality | 0.497 | ||
Peripheral | 15 (75.0%) | 51 (85.0%) | |
Central | 5 (25.0%) | 9 (15.0%) | |
Size | 0.897 | ||
≤ 2 cm | 10 (50.0%) | 27 (45.0%) | |
> 2 cm | 10 (50.0%) | 33 (55.0%) | |
Histology | 0.218 | ||
NSCLC | 15 (75.0%) | 45 (80.0%) | |
SCLC | 1 (5.0%) | 0 (0.0%) | |
Others | 4 (20.0%) | 12 (20.0%) |