Vitamin D Insufficiency Predicts Susceptibility of Parathyroid Hormone Reduction after Total Thyroidectomy in Thyroid Cancer Patients

Table 4

Biochemical parameters of vitamin D insufficient and sufficient patients.

Biochemical parameters	Vitamin D insufficiency (N = 186)	Vitamin D sufficiency (N = 56)	value
Preoperative PTH (pg/mL), median (IQR)	46.15 (35.84–57.44)	39.59 (33.04–51.90)	0.038
Preoperative calcium (mmol/L), mean ± SD	2.343 ± 0.118	2.371 ± 0.132	0.125
Postoperative PTH (pg/mL), median (IQR)	19.06 (8.60–27.42)	19.55 (10.90–30.56)	0.293
Postoperative calcium (mmol/L), mean ± SD	2.062 ± 0.177	2.095 ± 0.190	0.271
Hypoparathyroidism, n (%)	80 (43.0)	19 (33.9)	0.226
Hypocalcemia, n (%)	59 (31.7)	12 (21.4)	0.121