Table 1.
Clinical characteristics of OPLL (ossification of the posterior longitudinal ligament) patients and non-OPLL controls
| Female OPLL versus non-OPLL | |||
|---|---|---|---|
| OPLL (n = 57) | Non-OPLL (n = 27) | p (Student’s t) | |
| Age (year) | 58.6 ± 9* | 61.7 ± 8.7 | <0.05 |
| Height (cm) | 152.9 ± 6.7 | 150.3 ± 6.7 | N.S. |
| Weight (kg) | 59 ± 9.8* | 51.9 ± 7.8 | <0.01 |
| BMI (kg/m²) | 25.2 ± 4.4* | 22.9 ± 3.1 | <0.05 |
| Serum leptin (ng/ml) | 9.67 ± 5.1* | 6.55 ± 3.67 | <0.01 |
| Leptin/BMI | 0.368 ± 0.169* | 0.275 ± 0.122 | <0.01 |
| Male OPLL versus non-OPLL | |||
|---|---|---|---|
| OPLL (n = 68) | Non-OPLL (n = 35) | p (Student’s t) | |
| Age (year) | 61.2 ± 8.1* | 56.5 ± 11.2 | <0.05 |
| Height (cm) | 163.8 ± 5.8* | 166.6 ± 5.6 | <0.05 |
| Weight (kg) | 64.6 ± 9.2 | 64.4 ± 7.8 | N.S. |
| BMI (kg/m²) | 24 ± 2.7 | 23.1 ± 2.5 | N.S. |
| Serum leptin (ng/ml) | 3.85 ± 2.2 | 3.2 ± 1.4 | N.S. |
| Leptin/BMI | 0.156 ± 0.079 | 0.136 ± 0.055 | N.S. |
N.S. not significant, BMI body mass index
* Significantly different from non-OPLL