| |
Male + Female (n = 322)
|
Male (n = 242)
|
Female (n = 80)
|
P (M vs F)
|
|---|
|
Age (years old)
|
64.7 ± 11.2
|
64.7 ± 11.6
|
64.6 ± 10.0
|
0.90
|
|
Diabetes Mellitus (%)
|
31.7%
|
31.8%
|
31.3%
|
0.92
|
|
BMI
|
25.7 ± 4.8
|
25.8 ± 4.8
|
25.5 ± 4.7
|
0.62
|
|
JOSL CT classification
|
|
Grade 1 (1 < cervical OP-index≤5)
|
169 (52.5%)
|
125 (51.7%)
|
44 (55%)
|
–
|
|
Grade 2 (6 < cervical OP-index ≤9)
|
107 (33.2%)
|
83 (34.3%)
|
24 (30%)
|
–
|
|
Grade 3 (10 < cervical OP-index)
|
46 (14.3%)
|
34 (14.0%)
|
12 (15%)
|
–
|
|
Cervical OP-index
|
5.83 ± 2.9
|
5.86 ± 2.9
|
5.75 ± 3.0
|
0.78
|
|
OP-index
|
9.21 ± 6.8
|
8.24 ± 5.5
|
12.1 ± 9.0
|
< 0.01
|
|
No. of patients with OP-index of > = 20 (%)
|
27 (8.3%)
|
11 (4.5%)
|
16 (20%)
|
< 0.01
|
- Data are expressed as the mean ± standard deviation; BMI body mass index, OP-index ossification index of OPLL
