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

Table 1

Demographic, pathological, and preoperative biochemical parameters of patients in the HypoP and Non-HypoP groups.

	HypoP (N = 99)	Non-HypoP (N = 143)	value
Female, n (%)	82 (82.8)	108 (75.5)	0.174
Age (years), mean ± SD	47.4 ± 13.9	49.0 ± 12.9	0.340
25OHD (ng/mL), mean ± SD	24.5 ± 6.6	25.4 ± 7.9	0.333
Vitamin D insufficiency, n (%)	80 (80.8)	106 (74.1)	0.226
Preoperative PTH (pg/mL), median (IQR)	42.83 (32.85–50.62)	47.52 (36.67–59.98)	0.018
Preoperative calcium (mmol/L), mean ± SD	2.349 ± 0.110	2.350 ± 0.129	0.960
Bilateral CND, n (%)	54 (54.5)	89 (62.2)	0.231
LND, n (%)	30 (30.3)	40 (28.0)	0.694
Hashimoto’s thyroiditis, n (%)	13 (13.1)	22 (15.4)	0.624
Tumor > 1 cm, n (%)	46 (46.5)	71 (49.7)	0.626
N1 stage, n (%)	47 (47.5)	80 (55.9)	0.195

25OHD, 25-hydroxyvitamin D; PTH, parathyroid hormone; CCND, central compartment neck dissection; LCND, lateral compartment neck dissection.