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Table 1 Median survival time according to potential factors and the results of univariate and multivariate analyses

From: Retrospective study of hypofractionated stereotactic radiotherapy combined with whole brain radiotherapy for patients with brain metastases

Variables

N (%)

MST (months)

P value

Univariate

Multivariate

Sex

  

0.146

0.004

Male

32 (64.0)

12.4

  

Female

18 (36.0)

23.2

  

Age

  

0.532

0.630

 < 60

27 (54.0)

12.9

  

 ≥ 60

23 (46.0)

15.4

  

KPS

  

 < 0.001

 < 0.001

 ≥ 70

41 (82.0)

16.5

  

 < 70

9 (18.0)

2.8

  

Primary tumor location

  

0.619

–

Lung cancer

39 (78.0)

13.6

  

Others

11 (22.0)

12.4

  

Extracranial metastases

  

0.205

0.124

Existent

31 (62.0)

12.4

  

None

19 (38.0)

15.4

  

Contemporaneous BM

  

0.615

–

Yes

19 (38.0)

12.9

  

No

31 (62.0)

13.6

  

Number of BMs

  

0.872

–

Single

19 (38.0)

12.9

  

Multiple

31 (62.0)

15.4

  

GTV (cm3)

  

0.092

0.006

 < 10.0

29 (58.0)

16.7

  

 ≥ 10.0

21 (42.0)

12.9

  
  1. MST, median survival time; BMs, brain metastases; GTV, gross tumor volume