Table 2 Percentage of subjects with cross section area (CSA) of dural sac below 70 mm2, between 70–99.9 mm2 and ≥ 100 mm2 in the studied groups by level
Levels | Control group (n = 180) | Stenosis group (n = 165) | ||||
|---|---|---|---|---|---|---|
Below 70 mm2 | 70–99.9 mm2 | ≥ 100 mm2 | Below 70 mm2 | 70–99.9 mm2 | ≥ 100 mm2 | |
L1 | 0 | 0 | 100 (n = 180) | 7 (n = 11) | 9 (n = 15) | 84 (n = 139) |
L2 | 0 | 3 (n = 5) | 97 (n = 175) | 27 (n = 44) | 23 (n = 38) | 50 (n = 83) |
L3 | 3 (n = 5) | 9 (n = 16) | 88 (n = 159) | 61 (n = 101) | 26 (n = 43) | 13 (n = 21) |
L4 | 4 (n = 7) | 14 (n = 25) | 82 (n = 148) | 87 (n = 144) | 8 (n = 13) | 5 (n = 8) |
L5 | 3 (n = 5) | 14 (n = 25) | 83 (n = 150) | 32 (n = 53) | 27 (n = 44) | 41 (n = 68) |