Effect of Preoperative Vitamin D Deficiency on Hypocalcemia in Patients with Acute Hypoparathyroidism after Thyroidectomy

Table 6

Univariate and multivariate analysis for factors associated with symptomatic hypocalcemia.

Covariates	Univariate analysis			Multivariate analysis
	β-Coefficient	Odds ratio (95% CI)	value	β-Coefficient	Odds ratio (95% CI)	value
Preoperative 25(OH)D level (ng/mL)	−0.18	0.84 (0.73–0.96)	0.01	−0.21	0.81 (0.68–0.97)	0.02
Duration of operation (minute)	0.01	1.00 (1.00–1.01)	0.07
Intraoperative preservation of parathyroid glands	0.15	1.17 (0.58–2.35)	0.67
Weight of excised gland (g)	0.01	1.01 (1.00–1.01)	0.29
PTH level on postoperative day 0 (pg/mL)	−0.01	1.00 (0.81–1.21)	0.91
Percentage of PTH decline (%)	0.04	1.04 (0.97–1.11)	0.26
Postoperative magnesium level (mg/dL)	−3.34	0.04 (0.00–3.33)	0.15

A value < 0.05 indicates statistical significance. CI: confidence interval; 25(OH)D: 25-hydroxyvitamin D; PTH: parathyroid hormone; g: gram.