Table 1 Preoperative data of patients
|  | Group A | Group B | Group C | Statistical value | PA–B/PA–C/PB–C |
|---|---|---|---|---|---|
Gender (Male/Female) | 24/17 | 27/18 | 24/16 | χ2 = 0.025, P = 0.988 | -/-/- |
Age (years) | 47.6 ± 13.3 | 45.6 ± 13.6 | 49.4 ± 12.3 | F = 0.905, P = 0.407 | -/-/- |
Diseased vertebrae number | 1.9 ± 0.5 | 1.8 ± 0.5 | 1.9 ± 0.5 | F = 0.486, P = 0.616 | -/-/- |
During of symptoms (months) | 3.0 ± 1.2 | 3.3 ± 1.4 | 3.6 ± 1.5 | F = 1.378, P = 0.256 | -/-/- |
ESR (mm/h) | 68.4 ± 18.3 | 71.0 ± 16.0 | 69.9 ± 19.7 | F = 0.223, P = 0.800 | -/-/- |
CRP (mg/L) | 42.6 ± 10.5 | 46.8 ± 16.2 | 45.6 ± 15.8 | F = 0.968, P = 0.383 | -/-/- |
JOA | 18.8 ± 3.5 | 18.2 ± 3.8 | 18.3 ± 3.7 | F = 0.279, P = 0.757 | -/-/- |
ODI | 42.7 ± 5.9 | 43.6 ± 6.1 | 42.4 ± 7.2 | F = 0.387, P = 0.680 | -/-/- |
VAS | 6.9 ± 1.0 | 7.1 ± 1.1 | 6.8 ± 1.2 | F = 0.620, P = 0.540 | -/-/- |
Lordosis angle (°) | 16.1 ± 4.5 | 15.9 ± 4.5 | 16.3 ± 5.2 | F = 0.079, P = 0.924 | -/-/- |