Table 2. Mean spinal canal CSA for males and females.
| Variable | Mean (SD) | P value | |
|---|---|---|---|
| Males (N=540) | Females (N=540) | ||
| L1 | 273.7 (49.0) | 264.8 (42.5) | 0.002 |
| L2 | 256.3 (52.1) | 252.7 (42.6) | 0.212 |
| L3 | 247.8 (53.3) | 241.8 (43.6) | 0.043 |
| L4 | 276.3 (64.4) | 258.1 (55.1) | <0.0001 |
| L5 | 338.3 (82.6) | 296.9 (72.4) | <0.0001 |
| L1–L5 | 278.5 (50.3) | 262.8 (42.5) | <0.0001 |
Mean spinal canal CSA for both sexes at each level from L1 to L5 and overall for L1–L5. All statistically significant differences are bolded. SD, standard deviation; CSA, cross-sectional area.