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Table 4 Survival rates at 12 months of the prognostic factors found significant or almost significant on multivariate analysis and the corresponding factor scores

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

Prognostic factorSurvival rate at 12 months (%)Factor score
Age
  ≤ 60 years485
 61–70 years444
  > 70 years384
Karnofsky performance score
  ≤ 70232
 80–100556
Type of primary tumor
 Breast cancer646
 Prostate cancer525
 Lung cancer303
 Renal cell carcinoma636
 Colorectal cancer253
 Other tumors222