| Vitamin D non-deficient | Vitamin D deficient | p value | ||
---|---|---|---|---|---|
Number of patients (male/female) | 24(7/17) | 78(27/51) | Â | ||
Group A | Group B | ||||
27(11/16) | 27(12/15) | ||||
Average age | 68.88 ± 8.42 | 68.94 ± 9.04 | 0.715 | ||
 | Group A | Group B |  | ||
 | 68.47 ± 2.42 | 0.764 | |||
25(OH)D (preoperative) |  | 10.44 ± 1.02 | 10.97 ± 1.00 | 0.657 | |
25(OH)D (postop. 12 month) |  | 31.23 ± 1.09 | 16.24 ± 3.21 | 0.002* | |
25(OH)D (ostop. 24 month) |  | 32.14 ± 2.12 | 17.29 ± 4.38 | 0.003* | |
Level of surgery | Â | L3-4 | 1 | 1 | Â |
L4-5 | 21 | 20 | Â | ||
L5-6 | 5 | 6 | Â |