|
Variables
|
Before matching
|
After matching
|
|---|
|
With re-RT (n)
|
Without re-RT (n)
|
P
|
With re-RT (n)
|
Without re-RT (n)
|
P
|
|---|
|
Age (years)
| | |
1.000
| | |
1.000
|
|
< 65/≥65
|
26/13
|
32/16
| |
21/12
|
21/12
| |
|
KPS
| | |
0.770
| | |
0.802
|
|
70–80/>80
|
15/24
|
17/31
| |
13/20
|
14/19
| |
|
Gender
| | |
0.572
| | |
0.580
|
|
Male/Female
|
28/11
|
37/11
| |
23/10
|
25/8
| |
|
Smoking
| | |
0.619
| | |
0.796
|
|
Yes/No
|
15/24
|
16/32
| |
12/21
|
11/22
| |
|
Alcohol consumption
| | |
0.679
| | |
1.000
|
|
Yes/No
|
6/33
|
9/39
| |
5/28
|
5/28
| |
|
Primary tumor location
| | |
0.583
| | |
0.802
|
|
Upper/Middle and lower thoracic
|
14/25
|
20/28
| |
14/19
|
13/20
| |
|
Initial clinical stage
| | |
0.003
| | |
0.284
|
|
I + II/III
|
18/21
|
8/40
| |
12/21
|
8/25
| |
|
Surgery in the initial treatment
| | |
0.488
| | |
0.392
|
|
Yes/No
|
6/33
|
5/43
| |
2/31
|
4/29
| |
|
Chemotherapy in the initial treatment
| | |
0.582
| | |
0.806
|
|
Yes/No
|
18/21
|
25/23
| |
16/17
|
17/16
| |
|
Radiation dose in the initial treatment (Gy)
| | |
0.101
| | |
0.213*
|
|
≤ 50/> 50
|
8/31
|
4/44
| |
5/28
|
2/31
| |
|
Recurrence-free interval (months)
| | |
0.187
| | |
0.215
|
|
Median (range)
|
27(4163)
|
12.5(3168)
| |
27(5163)
|
12(3144)
| |
|
≤ 12/> 12
|
14/25
|
24/24
| |
12/21
|
17/16
| |
- Abbreviation: Re-RT Re-irradiation, KPS Karnofsky performance status. *:Fisher's exact tests
