Table 1.

Clinical factors.

Characteristic	Value
Stage
I	4 (5.7%)
II	5 (7.1%)
III	53 (75.7%)
IV	8 (11.4%)
Sex
Male	61 (87.1%)
Female	9 (12.9%)
Age
Range	35-84
Mean ± Std.	61 ± 10
Tumor location
Left	33 (47.1%)
Right	37 (52.9%)
KPS
≤80	41 (58.6%)
>80	29 (41.4%)
Concurrent chemotherapy
Yes	38 (54.3%)
No	32 (45.7%)
Smoking history
Yes	60 (85.7%)
No	10 (14.3%)
Prescription dose (Gy)
Single fraction	2.27 ± 0.85
Total	59.10 ± 5.67
RP grade
≥2	15 (21.4%)
<2	55 (78.6%)

KPS, Karnofsky performance status.