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Table 2 Univariate analyses of survival

From: Prognostic factors and a new scoring system for survival of patients irradiated for bone metastases

 Survival rate at 6 months (%)Survival rate at 12 months (%)p-value
Age
  ≤ 60 years6148 
 61–70 years6044 
  > 70 years60380.052
Gender
 Female6450 
 Male5635< 0.001
Karnofsky performance score
  ≤ 704223 
 80–1007055< 0.001
Type of primary tumor
 Breast cancer7864 
 Prostate cancer7852 
 Lung cancer4630 
 Renal cell carcinoma7963 
 Colorectal cancer4525< 0.001
 Other tumors4222 
Interval between cancer diagnosis and RT of bone metastases
  ≤ 8 months5440 
  ≥ 9 months66450.044
Visceral metastases at the time of RT
 No6749 
 Yes55380.002
Other (non-irradiated) bone metastases at the time of RT
 No5336 
 Yes63450.23
Location of irradiated bone metastases
 Spinal site(s) only5940 
 Extraspinal site(s) with or without spinal site(s)61440.95
Number of irradiated sites
 Single5943 
 Multiple61420.41
Pathological fracture
 No6146 
 Yes57350.049
Pre-RT surgery (no vs. yes)
 No5742 
 Yes72480.17
Pre-RT administration of bisphosphonates/denosumab
 No5641 
 Yes65450.55
Pre-RT systemic anticancer treatment
 No5540 
 Yes62440.33
Fractionation of RT
 Short-course RT4026 
 Longer-course RT62450.022
  1. Bold values = significant p-values