Table 1 Comparison of demographic data between the 2 groups
PD group | Non-PD group | p value | |
|---|---|---|---|
N of patients | 26 | 296 | – |
Age at operation (years) median, [IQR] | 76.0 [8.0] | 75.0 [10.8] | 0.3343 |
Sex [male/female] (N of patients) | 3/23 | 66/230 | 0.1999 |
BMI (kg/m2) median, [IQR] | 22.1 [6.3] | 22.5 [4.7] | 0.1600 |
Vertebral level (N of patients) | T11: 3 | T10: 16 | 0.6112 |
T12: 8 | T11: 25 | ||
L1: 11 | T12: 116 | ||
L2: 4 | L1: 103 | ||
L2: 36 | |||
Surgical procedure (N of patients) | APSF: 2 | ASF: 19 | 0.7176 |
PSF: 3 | APSF: 27 | ||
3CO: 9 | PSF: 37 | ||
VP + PSF: 12 | 3CO: 84 VP + PSF: 129 | ||
Number of fused segment (segment) median, [IQR] | 4.0 [2.0] | 4.0 [2.0] | 0.9534 |
BMD YAM (%) median, [IQR] | 73.0 [25.0] | 69.0 [19.8] | 0.9295 |
Number of patients with existing vertebral fracture [fx/no fx] (N of patients) | 8/18 | 108/188 | 0.7338 |
Number of comorbidity (disease) median, [IQR] | 1.0 [0.0] | 1.0 [1.0] | < 0.0001 |
Follow-up period (month) median, [IQR] | 37.0 [19.0] | 44.0 [28.0] | 0.1787 |