Table 2 Mean density of paraspinal muscles (± SD) in the stenosis and control groups by sex
From: Paraspinal muscles density: a marker for degenerative lumbar spinal stenosis?
Sex | Muscle | Mean density (HU) ± SD | P value | |
|---|---|---|---|---|
|  |  | Control (N = 90) | DLSS (N = 80) |  |
Male | Psoas | 40 ± 9 | 45 ± 9 | <0.001 |
Multifidus | 34 ± 15 | 45 ± 12 | <0.001 | |
Erector spinae | 34 ± 11 | 43 ± 10 | <0.001 | |
|  |  | N = 90 | N = 85 |  |
Female | Psoas | 40 ± 8 | 43 ± 10 | 0.01 |
Multifidus | 24 ± 16 | 31 ± 17 | <0.001 | |
Erector spinae | 29 ± 12 | 35 ± 15 | <0.001 | |