. 2022 Mar 29;37(13):e99. doi: 10.3346/jkms.2022.37.e99

Table 4. Comparisons between ECPHPT and NCPHPT.

Variables		ECPHPT (n = 95)	NCPHPT (n = 27)	P value
Age, yr		54.2 ± 12.1	54.6 ± 16.3	0.893
Sex, n				0.881
	Male	13 (13.7%)	4 (14.8%)
	Female	82 (86.3%)	23 (85.2%)
BMD (n = 80, 19)				0.074
	Normal	21 (26.3%)	6 (31.6%)
	Osteopenia	28 (35.0%)	2 (10.5%)
	Osteoporosis	31 (38.8%)	11 (57.9%)
Nephrolithiasis, n		13 (13.7%)	2 (7.4%)	0.381
Bone fracture, n		7 (7.4%)	2 (7.4%)	0.995
Preop PTH, pg/mL		120.6 ± 49.2	99.1 ± 24.5	0.002^a
Preop corrected sCa, mg/dL		10.1 ± 0.3	9.5 ± 0.6	0.000^a
Preop iCa, mg/dL		5.5 ± 0.2	4.9 ± 0.3	0.000^a
Preop phosphate, mg/dL		2.8 ± 0.5	3.2 ± 0.5	0.000^a
Miami criterion met, n		86 (90.5%)	21 (77.8%)	0.097
No. of lesion				0.481
	Single	86 (90.5%)	23 (85.2%)
	Double	9 (9.5%)	4 (14.8%)
Parathyroid size, cm
	Single	1.5 ± 0.9	1.1 ± 0.5	0.003^a
	Double	0.6 ± 0.3	1.0 ± 0.4	0.012^a

All continuous variables expressed as mean ± standard deviation.

ECPHPT = normocalcemic primary hyperparathyroidism with elevated ionized calcium, NCPHPT = normocalcemic primary hyperparathyroidism with normal ionized calcium, BMD = bone mineral density, PTH = parathyroid hormone.

^aStatistical significance.