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Table 5 Results of the multivariate analysis

From: Risk factors of distant brain failure for patients with newly diagnosed brain metastases treated with stereotactic radiotherapy alone

Parameter

p value

Hazard ratio

95% confidence interval for Hazard ratio

No. of metastases

> 1 vs. 1

0.041

1.77

1.02-3.05

Total target volume (cc)

≤ 6 vs. > 6

0.049

0.59

0.35-0.99

Extracranial disease

progressive vs.

absent or controlled

0.005

2.55

1.33-4.87

IT (months)

≥ 60 vs. < 60

0.024

0.34

0.14-0.87

KPS score

≠70 vs. = 70

0.140

0.66

0.39-1.14

Histologic characteristics

Melanoma vs. Others

0.416

1.66

0.49-5.58

  1. IT, interval time; KPS, Karnofsky performance score