Table 3 Demographic data for patients in the validation study
LSS (n = 165) | The others (n = 85) | |
|---|---|---|
Male (%) | 47 | 51 |
Female (%) | 53 | 49 |
Mean age (yr) | 71 | 48 |
Mean duration of symptoms (mo) | 28 | 24 |
Clinical impressions of patient condition | Cauda equina type 78 | LDH* 61 |
Radicular type 87 | DN* 13 | |
PAD* 11 | ||
Findings on MRI | ||
One level stenosis | 127 | 12 |
Two level stenosis | 31 | 2 |
Three level stenosis | 7 | 0 |