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Table 1 Baseline characteristics of randomly assigned participants

From: Bone density and pain response following intensity-modulated radiotherapy versus three-dimensional conformal radiotherapy for vertebral metastases - secondary results of a randomized trial

  IMRT group n = 30 3D group n = 30 p-value
n % n %  
Age (years)      0.219
Mean (SD) 66,1 (10,5)   62,5 (11,8)   
Karnofsky-Perfomance Status      0.283
Mean (SD) 64,9 (9,32)   61,3 (9,7)   
Gender      0.795
Male 17 56,7 16 53,3  
Female 13 43,3 14 46,7  
Weight (kg, SD) 75,8 (14,9)   76,2 (19,4)   0.929
Height (cm, SD) 171,6 (8,8)   172,2 (8,6)   0.790
Body mass index (BMI)      0.960
Mean (SD) 25,7 (4,4)   25,6 (5,7)   
Primary site
 Lung cancer 11 36,7 16 53,3  
 ABreast cancer 7 23,3 6 20  
 Prostata cancer 6 20 1 3,3  
 Other 6 20 7 23,3  
Volume of metastases at baseline
 Mean size (mm3) 30 1166,6 30   0.191
Localization metastases 0.261
 Cervical 4 13,3 5 16,7  
 Thoracic 15 50 15 50  
 Lumbar 11 36,7 7 23,3  
 Sacrum 0 0 3 10  
Number metastases 0.140
 1 metastase 17 56,7 10 33,3  
 2 metastases 4 13,3 9 30  
 3 metastases 9 30 11 36,7  
Distant metastases at baseline
 Viszeral 14 46,7 10 33,3 0.292
 Lung 7 23,3 6 20 0.754
 Brain 4 13,3 5 16,7 0.718
 Tissue 5 16,7 5 16,7 1.000
 Hormontherapy 12 40 6 20 0.091
 Immuntherapy 4 13,3 5 16,7 0.718
 Chemotherapy 14 46,7 20 66,7 0.118
 Surgery 18 60 13 43,3 0.196
 Neurological deficit at baseline 4 13,3 3 10 0.688
 Bisphosphonate at baseline 13 43,3 7 23,3 0.100
 Orthopedic corset at baseline 9 30 10 33,3 0.781
Medication at baseline
 Sleeping medication 5 16,7 2 6,7 0.228
 Psychiatric medication 9 30 6 20 0.371
 Opiate 20 66,7 17 56,7 0.426
 NSAID 23 76,7 19 63,3 0.260
  1. Explanation: Others: carcinoma of unknown primary (CUP), gastrointestinal stromal tumor (GIST), melanoma, mesothelioma, pancreatic cancer, renal cancer. Abbreviations: NSAID nonsteroidal inflammatory drug