Table 2. Comparison of Vitamin D Level between Two Points for Each Group.

Variable		Group I	Group II	Group III
Preop		48.3 ± 11.6 (31.2–70)	21.5 ± 7.7 (8.1–30)	20.2 ± 6.6 (5.2–8.2)
POD 3		40.4 ± 10.7 (24.6–56.7)	31.2 ± 24.9 (3–107.7)	69.9 ± 16.4 (29.6–99)
POD 14		38.9 ± 8.9 (27.4–57.7)	38.9 ± 21.5 (6–97.3)	68.5 ± 17.9 (42.5–106)
p-value
	Preop to POD 3	0.001	0.06	< 0.001
	Preop to POD 14	0.001	0.001	< 0.001

Values are presented as mean ± standard deviation (range).

Preop: preoperative, POD: postoperative day.