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Table 1 Patients‘ characteristics

From: Survival and prognostic factors in patients with stable and unstable spinal bone metastases from solid tumors: a retrospective analysis of 915 cases

   Stable metastases Unstable metastases All patients p-value
   n % n % n %  
Age (years) Mean (SD) 61.8 +/− 11.0 63.7 +/− 11.0 62.7 +/− 11.1 0.973
Gender Male 246 50 243 50 489 53 0.983
  Female 214 50 212 50 426 47  
KPS <80 195 46 227 54 422 46 0.023
  > = 80 265 54 228 46 493 54  
Primary site
  NSCLC 211 50 214 50 425 46 0.038
  Breast cancer 83 47 92 53 175 20  
  Renal cancer 72 45 87 55 159 17  
  Other 94 60 62 40 156 17  
Localization metastases
  Thoracic 275 49 288 51 563 62 0.275
  Lumbar 185 53 167 47 352 38  
Number metastases
  Solitary 243 58 174 42 417 46 <0.001
  Multiple 217 44 281 56 498 54  
Other distant metastases
  Liver 102 55 84 45 186 20 0.163
  Brain 71 56 56 44 127 14 0.176
  Lung 111 58 81 42 192 21 0.019
  Skin 26 72 10 28 36 4 0.007
Bisphosphonates   327 51 320 49 647 71 0.801
Chemotherapy   266 53 236 47 502 55 0.065
Orthopedic corset 140 32 302 68 442 48 <0.001
Radiotherapy schedule
  10 × 3 Gy 349 53 314 47 663 72 0.092
  14 × 2.5 Gy 36 40 53 60 89 10  
  20 × 2 Gy 68 45 82 55 150 16  
  Other 7 54 6 46 13 1