|
Characteristics
|
SR group N (%)
|
NSR group N (%)
|
P value
|
|---|
|
Gender
| | | |
|
Female
|
28 (50.9)
|
31 (52.5)
|
0.862
|
|
Male
|
27 (49.1)
|
28 (47.5)
|
|
Age (years) Mean ± SD
|
66.8 ± 8.8
|
63.7 ± 8.6
|
0.062
|
|
Location of tumor
| | | |
|
Upper
|
32 (58.2)
|
41 (69.5)
|
0.192
|
|
Middle
|
22 (40.0)
|
15 (25.4)
|
|
Lower
|
1 (1.8)
|
3 (5.1)
|
|
Initial length (cm) Mean ± SD
|
4.9 ± 2.0
|
5.7 ± 2.5
|
0.046
|
|
Initial ECOG-PS
| | | |
|
0-I
|
46 (83.6)
|
52 (88.1)
|
0.523
|
|
II
|
8 (14.6)
|
7 (11.9)
|
|
III
|
1 (1.8)
|
0 (0)
|
|
Initial clinical stage#
| | | |
|
I-II
|
40 (72.7)
|
36 (61.0)
|
0.185
|
|
III
|
15 (27.3)
|
23 (39.0)
|
|
Initial radiation dose (Gy) Mean ± SD
|
61.2 ± 5.4
|
62.1.6 ± 2.6
|
0.262
|
|
TRS time
| | | |
|
≤12 months
|
24 (43.6)
|
38 (64.4)
|
0.026
|
|
>12 months
|
31 (56.4)
|
21 (35.6)
|
|
Salvage radiation dose
| | | |
|
≤50 Gy
|
24 (43.6)
|
NA*
|
NA*
|
|
>50 Gy
|
31 (56.4)
|
|
Mean ± SD (Gy)
|
51.9 ± 10.3
|
-
#According to TNM classification 6th edition,*NA: not-available.
