PTH and hypoparathyroidism: The postoperative-1-day PTH level was higher in the TT group than those in the TT + ICND and TT + BCND groups, whereas the incidence of immediate hypoparathyroidism was not significantly different between the TT and TT + ICND groups (25.0% vs 33.8%, P = 0.12; Table 2).