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Table 1 Patient characteristics at baseline

From: Feasibility of isometric spinal muscle training in patients with bone metastases under radiation therapy - first results of a randomized pilot trial

  Intervention group (n = 30) Control group (n = 30) p-value
n % n %  
Age (years)
 Mean (SD) 61.3 (10.1)   64.1 (10.9)   0.304
Gender
 Male 14 46.7 19 63.3 0.195
 Female 16 53.3 11 36.7  
Weight (kg, SD) 74.3 (14.7)   72.7 (12.1)   0.553
Height (cm, SD) 171.2 (8.3)   172.3 (7.5)   0.906
Body mass index
 Mean (SD) 25.3 (4.5)   24.4 (3.6)   0.559
Karnofsky-index (median, range) 80 (70–100)   80 (70–100)   1.000
Primary site
 Lung cancer 12 9.2 8 26.6 0.320
 Breast cancer 5 16.7 6 20.1 0.542
 Prostate cancer 5 16.7 9 30.1 0.156
 Melanoma 1 3.3 1 3.3 1.000
 Renal cancer 1 3.3 2 6.7 0.875
 Other 6 20.1 4 13.4 0.325
Localization metastases      0.717
 Thoracic 17 56.7 14 46.7  
 Lumbar 9 30.0 13 43.3  
 Thoracic and lumbar 2 6.7 2 6.7  
 Sacrum 2 6.7 1 3.3  
Number metastases      0.257
 Mean (range) 1.4 (2–4)   1.7 (1–5)   
 Solitary 22 73.3 18 60.0  
 Multiple 8 26.7 12 40.0  
Type of metastases      0.961
 Mixed 2 6.7 2 6.7 1.000
 Osteoblast 9 30.0 10 33.3 0.956
 Osteolytic 19 63.3 18 60.0 .0932
Distant metastases at baseline      
 Visceral 12 40.0 5 16.7 0.045
 Brain 3 10.0 3 10.0 1.000
 Lung 7 23.3 4 13.3 0.320
 Tissue 8 26.7 6 20.0 0.542
Hormonotherapy 10 33.3 16 53.3 0.118
Immunotherapy 7 23.3 5 16.7 0.519
Chemotherapy 25 83.3 20 66.7 0.136
Pathological fracture at baseline 6 20.0 9 30.0 0.379
Neurological deficit 0 0.0 2 6.7 0.150
Orthopedic corset at baseline 7 23.3 5 16.7 0.519
Radiotherapy dose completed (Gy)      0.136
 Single dose (median, range) 3 (2–4)   3 (2–4)   1.000
 Cumulative dose (median, range) 30 (30–40)   30 (30–40)   1.000
  1. Abbreviations: SD Standard deviation.