Table 2.
Clinical characteristics of type C-OPLL (a type of OPLL limited to the cervical spine) and type TL-OPLL (a type of OPLL extended to the thoracic and/or lumbar spine) patients
| Female type C-OPLL versus type TL-OPLL | |||
|---|---|---|---|
| Type C (n = 15) | Type TL (n = 42) | p (Student’s t) | |
| Age (year) | 58.6 ± 10 | 56.1 ± 8.6 | N.S. |
| Height (cm) | 153.1 ± 6.3 | 152.8 ± 6.9 | N.S. |
| Weight (kg) | 56.6 ± 10.1 | 59.8 ± 9.6 | N.S. |
| BMI (kg/m²) | 24.2 ± 5 | 25.5 ± 4.1 | N.S. |
| Serum leptin (ng/ml) | 6.64 ± 4 | 10.7 ± 5* | <0.01 |
| Leptin/BMI | 0.261 ± 0.122 | 0.407 ± 0.168* | <0.01 |
| Serum insulin (μU/ml) | 10.1 ± 4.3 | 19.2 ± 22.2 | N.S. |
| Serum FRA (μM) | 511 ± 176 | 708 ± 418 | N.S. |
| Male type C-OPLL versus type TL-OPLL | |||
|---|---|---|---|
| Type C (n = 48) | Type TL (n = 20) | p (Student’s t) | |
| Age (year) | 60.9 ± 8.6 | 61.9 ± 6.8 | N.S. |
| Height (cm) | 164.3 ± 5.6 | 162.5 ± 6.2 | N.S. |
| Weight (kg) | 64.7 ± 9 | 64.5 ± 9.8 | N.S. |
| BMI (kg/m²) | 23.9 ± 2.6 | 24.3 ± 3.2 | N.S. |
| Serum leptin (ng/ml) | 3.62 ± 2.16 | 4.41 ± 2.33 | N.S. |
| Leptin/BMI | 0.148 ± 0.08 | 0.173 ± 0.075 | N.S. |
| Serum insulin (μU/ml) | 15 ± 16.7 | 20.1 ± 21.4 | N.S. |
| Serum FRA (μM) | 672 ± 293 | 739 ± 281 | N.S. |
N.S. not significant, BMI body mass index, FRA fructosamine
* Significantly different from type C-OPLL