Table 4.

Comparison between patients in which there was a >50% decrease of PTH within 10 min (group A) to those with no decrease or late decrease (group B)

	Group A	Group B	p
Patients	156	32
Mean age	59.4	59.9	0.84
Positive and concordant localization studies	106	18	0.2857
Negative or discordant localization studies	50	14
Mean baseline PTH (pg/ml)	334.81	152.67	0.004