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Table 3 Univariate analysis for overall survival

From: Predicting the survival of patients with bone metastases treated with radiation therapy: a validation study of the Katagiri scoring system

Variable

Subgroups

Entire cohort

Validation cohort for the Katagiri’s scoring system

Median survival (m)

P value

Median survival (m)

P value

Gender

Men

8.0

 

3.0

 

Women

4.0

< 0.001

9.0

< 0.001

Age

≤ 64

5.0

 

4.0

 

≥ 65

4.0

0.604

3.0

0.529

KPS

10–60

3.0

 

3.0

 

70–80

5.0

 

4.0

 

90–100

8.0

< 0.001

8.0

0.007

ECOG PS

0–2

6.0

 

5.0

 

3–4

3.0

< 0.001

3.0

0.003

Primary lesion

Lung cancer

4.0

 

3.0

 

Breast cancer

13.0

 

20.0

 

Prostate cancer

8.0

 

8.0

 

Others

4.0

< 0.001

4.0

< 0.001

Primary characteristics

Slow

10.0

 

13.0

 

Moderate

8.0

 

8.0

 

Rapid

3.0

< 0.001

3.0

< 0.001

Visceral metastases

No

11.0

 

11.0

 

Nodular

4.0

 

4.0

 

Disseminated

2.0

< 0.001

2.0

< 0.001

Laboratory data

Normal

12.0

 

11.0

 

Abnormal

4.0

 

4.0

 

Critical

2.0

< 0.001

2.0

< 0.001

Previous chemotherapy

No

6.0

 

5.0

 

Yes

4.0

< 0.001

3.0

< 0.001

Multiple bone metastases

No

5.0

 

4.0

 

Yes

4.0

0.691

4.0

0.961

Katagiri score

0–3

  

27.0

 

4–6

  

6.0

 

7–10

  

2.0

< 0.001