Table 5.

Univariate and multivariate logistic regression analysis of risk factors related to persistent hypercalcemia after parathyroidectomy.

Risk factors	Univariate adjusted OR (95% CI)	P	Multivariate adjusted OR (95% CI)	P
Age	1.07 (1.01–1.13)	0.017	1.05 (0.97–1.14)	0.255
Male sex	2.92 (1.07–7.97)	0.036	1.04 (0.24–4.54)	0.956
Drop rate of intact PTH (<88%) on POD1	13.05 (3.94–43.19)	0.001	10.28 (2.70–39.13)	0.001
PTH level (>65 pg/ml) on POD1	8.31 (2.53–27.31)	0.001	4.13 (0.67–25.43)	0.127
Number of resected parathyroid glands (≤2)	5.49 (1.98–15.20)	0.001	6.84 (1.75–26.70)	0.006
Size of remnant parathyroid (≥0.8 cm)	2.63 (0.92–7.51)	0.070	2.87 (0.64–12.88)	0.168
Missing parathyroid glands	2.68 (0.98–7.38)	0.056	0.57 (0.06–5.42)	0.624

OR, odds ratio; POD, postoperative day; PTH, parathyroid hormone; PTH, parathyroid hormone.