Table 2.

Comparison of two groups of 297 patients undergoing subtotal PTX and incomplete PTX surgery with rHPT

	Subtotal PTX	Incomplete PTX	P
Number of patients (%)	268 (90.2)	29 (9.8)	NA
iPTH pg/ml (mean ± SD)
preoperatively baseline	1531.4 ± 647.8	1588.1 ± 609.7	0.651
6 months postoperatively	122.9 ± 182.2	344.5 ± 208.3	<0.001
Average serum calcium level mmol/l (mean ± SD)
preoperatively baseline	2.56 ± 0.05	2.58 ± 0.02	0.034
6 months postoperatively	2.31 ± 0.21	2.55 ± 0.01	<0.001
Average serum phosphorus level mmol/l (mean ± SD)
preoperatively baseline	2.41 ± 0.52	2.38 ± 0.38	0.763
6 months postoperatively	1.48 ± 0.51	2.32 ± 0.41	<0.001
Persistent disease, number (%)	12 (4.5)	5 (17.2)	0.005
Hungry bone syndrome, number (%)	84 (31.3)	2 (6.9)	0.006
Unilateral RLN injury, number (%)a
transient	8 (1.5)	6 (10.3)	<0.001
permanent	2 (0.4)	3 (5.2)	0.003

Reference range 12–65 pg/ml, calcium total 2.2–2.6 mmol/l; phosphate 0.81–1.62 mmol/l

NA not available, iPTH parathyroid hormone

^aRLN injury was calculated for nerves at risk and not for patients (there were 594 nerves at risk in all patients with rHPT group)