Table 1.
Patient and tumor characteristics
| Characteristic | Median (Range) |
|---|---|
| Age (y) | 77 (55–95) |
| Follow-up (months) | 16 (3–43) |
| Dose (Gy) | 54 (40–60) |
| Treatment time (days) | 7 (4–19) |
| Total fractions (n) | 3 (3–5) |
| 3 fractions | 73 |
| 4 fractions | 38 |
| 5 fractions | 15 |
| Tumor diameter (cm) | 2.1 (0.6–8.0) |
| T stage | |
| T1a | 63 |
| T1b | 32 |
| T2a | 27 |
| T2b | 2 |
| T3 | 2 |
| Tumor location | |
| Right superior | 41 |
| Right inferior | 26 |
| Right middle | 11 |
| Left superior | 26 |
| Left inferior | 22 |
| Histology | |
| Adenocarcinoma | 93 (74%) |
| Unspecified non–small-cell lung cancer | 2 (2%) |
| Not determined | 1 (1%) |
| Squamous | 30 (24%) |