Table 1.
Difference in patients with OPLL between CDH present and CDH absent
| CDH present (26) | CDH absent (116) | P value | |
|---|---|---|---|
| Mean age (years) | 54.3 ± 6.6 | 56.1 ± 5.9 | >0.05 |
| Gender | |||
| Male | 17 (65.4) | 82 (70.7) | >0.05 |
| Female | 9 (34.6) | 34 (29.3) | |
| Duration of symptoms (months) | 9.8 ± 2.2 | 12 ± 3.1 | <0.01 |
| Remote cause | |||
| Yes | 8 (30.8) | 19 (16.4) | >0.05 |
| No | 18 (69.2) | 97 (83.6) | |
| Mean spinal canal diameter (mm) | 14.7 ± 1.2 | 14.2 ± 1.1 | >0.05 |
| Mean occupying rate (%) | 38.8 ± 9.3 | 49.7 ± 8.2 | <0.01 |
| Type of OPLL | |||
| Segmental (%) | 15 (57.7) | 45 (38.8) | >0.05 |
| Mixed (%) | 9 (34.6) | 38 (32.8) | >0.05 |
| Continuous (%) | 2 (7.7) | 33 (28.4) | <0.05 |
| Mean extent of OPLL | 3.3 ± 0.9 | 3.0 ± 0.2 | >0.05 |