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Table 1 The characteristics of the study sample (n =84)

From: An outcome measure of functionality in patients with lumber spinal stenosis: a validation study of the Iranian version of Neurogenic Claudication Outcome Score (NCOS)

Age groups (Year)   No. %
  30-54 23 27
  55-64 24 29
  ≥65 37 44
  Mean (SD) 61 (11)  
  Range 30-84  
Gender    
  Male 25 30
  Female 59 70
Educational status  
  Illiterate 20 24
  Primary 44 52
  Secondary 12 15
  College/university 8 9
Marital status  
  Single 7 8
  Married 66 79
  Divorced/widowed 11 13
Morphology of the Dural Sac on MRI*   
  C 56 67
  D 28 33
NCOS score**    
Preoperative    
  Mean (SD) 26.9 (12.7)  
  Range (SD) 0-61  
Postoperative    
  Mean (SD) 69.7 (16.8)  
  Range 31-100  
ODI***    
Preoperative    
  Mean (SD) 32.4 (12.1)  
  Range 21-50
Postoperative  
  Mean (SD) 14.9 (11.2)  
  Range 0-26  
  1. * D: Extreme and C: Severity of lumbar spinal stenosis based on the morphology of the dural sac as observed on T2 axial MRI. There were no less severe groups in the study.
  2. **. Higher scores on the NCOS indicate better conditions.
  3. *** Higher scores on the ODI indicate worst conditions.
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