|
Characteristics
|
No. of patients(%)
|
|---|
|
Gender
| |
|
Male
|
20 (68.97)
|
|
Female
|
9 (31.03)
|
|
Age(years)
| |
|
Median
|
58
|
|
Range
|
36-75
|
|
≥60
|
13 (44.83)
|
|
<60
|
16 (55.17)
|
|
KPS scores
| |
|
≥70
|
19 (65.52)
|
|
<70
|
10 (34.48)
|
|
Pathology
| |
|
Adenocarcinoma
|
18 (62.07)
|
|
Non-adenocarcinoma
|
11 (37.93)
|
|
RPA class
| |
|
2
|
19 (65.52)
|
|
3
|
10 (34.48)
|
|
SIR scores
| |
|
≤5
|
13 (44.83)
|
|
>5
|
16 (55.17)
|
|
GPA scores
| |
|
0-1
|
13 (44.83%)
|
|
1.5-2
|
11 (37.93%)
|
|
2.5-3
|
3 (10.34%)
|
|
3.5
|
2 (6.90%)
|
|
History of EGFR-TKI treatment
| |
|
Yes
|
11 (37.93)
|
|
No
|
18 (62.07)
|
|
Number of lesions
| |
|
Mean
|
3
|
|
<3
|
15 (51.72)
|
|
≥3
|
14 (48.28)
|
|
Maximum lesion volume
| |
|
<3 cc
|
12 (41.38)
|
|
≥3 cc
|
17 (58.62)
|
|
Total volume of lesions
| |
|
<7 cc
|
15 (51.72)
|
|
≥7 cc
|
14 (48.28)
|
|
Total
|
29
|
- Abbreviations: KPS = Karnofsky performance status; RPA = recursive partitioning analysis; SIR = score index for radiosurgery in brain metastases; GPA = graded prognostic assessment; EGFR-TKI = epidermal growth factor receptor tyrosine kinase inhibitor.
