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Covariates for subanalysis
| N | Covariates for subanalysis |
|---|---|
| 1 | Age and age banding ( < 60 years, > 60 years or similar linked to groups size after recruitment) |
| 2 | Long medical history of back pain |
| 3 | Leg pain intensity |
| 4 | Proportion leg pain/back pain |
| 5 | Extent of stenosis during MRI examination |
| 6 | Kind of stenosis (soft or bony) |
| 7 | Sexe |
| 8 | Surface area of spinal canal |
N, number of covariate (alphabetically ordered)
