Table 1

The characteristics of the study sample (n =84)
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

* 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.

**. Higher scores on the NCOS indicate better conditions.

*** Higher scores on the ODI indicate worst conditions.

Azimi et al.

Azimi et al. BMC Neurology 2012 12:101   doi:10.1186/1471-2377-12-101

Open Data