Table 3.

Characteristics of the patients who underwent additional parathyroidectomies.

	Patient characteristics
	7
Mean duration until additional PTx (months) (SD)	30.7 (17.7)
Mean serum calcium level before additional PTx (mg/dL) (SD)	10.1 (0.8)
Mean serum phosphorus level before additional PTx (mg/dL) (SD)	5.2 (0.8)
Mean serum intact PTH level after initial operation (pg/mL) (SD)	157.1 (106.9)
Mean serum intact PTH level before additional PTx (pg/mL) (SD)	409.0 (183.2)
Mean serum intact PTH level after additional PTx (pg/mL) (SD)	41.0 (37.9)

PTH, parathyroid hormone; PTx, parathyroidectomy; SD, standard deviation.