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|
Variables
| |
≤ 2cycles
|
3-4cycles
|
5-6cycles
|
> 6 cycles
|
p value
|
|---|
|
Age, y
|
< 60
|
20
|
36
|
46
|
15
| |
| |
≥ 60
|
21
|
42
|
46
|
18
|
0.950
|
|
Sex
|
Male
|
34
|
60
|
68
|
30
| |
| |
Female
|
7
|
18
|
24
|
3
|
0.189
|
|
ECOG PS score
|
0–1
|
38
|
71
|
85
|
32
| |
| |
2
|
3
|
7
|
7
|
1
|
0.487
|
|
Smoking index
|
≥ 400
|
20
|
47
|
38
|
15
| |
| |
< 400
|
21
|
31
|
54
|
18
|
0.098
|
|
Metastatic organs
|
single
|
16
|
36
|
33
|
9
| |
| |
Multiple
|
25
|
42
|
59
|
24
|
0.266
|
|
Number of metastases
|
≤ 2
|
11
|
18
|
16
|
4
| |
| |
> 2
|
30
|
60
|
76
|
29
|
0.345
|
|
Brain metastasis
|
yes
|
25
|
46
|
55
|
22
| |
| |
no
|
16
|
32
|
37
|
11
|
0.891
|
|
Liver metastasis
|
yes
|
9
|
21
|
35
|
7
| |
| |
no
|
32
|
57
|
57
|
26
|
0.128
|
|
Bone metastasis
|
yes
|
18
|
22
|
38
|
20
| |
| |
no
|
23
|
56
|
54
|
13
|
0.014
|
|
Weight loss
|
yes
|
4
|
8
|
14
|
5
| |
| |
no
|
37
|
70
|
78
|
28
|
0.695
|
|
PCI
|
yes
|
3
|
6
|
5
|
2
| |
| |
no
|
38
|
72
|
87
|
31
|
0.641
|
|
Radiation dose
|
≤ 50 Gy
|
27
|
50
|
60
|
22
| |
| |
> 50 Gy
|
14
|
28
|
32
|
11
|
0.994
|
- ES-SCLC, Extensive-stage small-cell lung cancer; ECOG PS, Eastern Cooperative Oncology Group performance status; PCI, Prophylactic cranial irradiation;
