Table 1.

Characteristics of individuals who were hypercalciuric and control individuals studied

	Control Patients	Patients Who Were Hypercalciuric	P Value
No.	12	12	NS
Age, yr	48±14	58±21	NS
Sex, women/men	7/5	7/5	NS
No. of stones	0	>12	<0.01
Urine
Ca2+, mg/d	90±43	306±122	<0.001
pH	6.3±0.4	6.2±0.5	NS
Volume, ml	1368±697	2155±752	<0.05
Na+, mEq/d	159±125	164±76	NS
K+, mEq/d	56±31	73±36	NS
Uric acid, mg/d	418±172	701±442	NS
Creatinine, mg/d	1259±572	1453±775	NS
Mg2+, mg/d	83±47	130±30	<0.05
Cl−, mEq/d	102±22	148±94	NS
NH4+, mEq/d	21±9	34±18	NS
Citrate, mg/d	598±389	746±334	NS
Phosphorus, mg/d	698±357	1111±527	NS
Oxalate, mg/d	27±18	38±11	NS
SO42−, mmol/d	15±8	23±13	NS
Serum
BUN, mg/dl	16±2	15±6	NS
Creatinine, mg/dl	0.9±0.3	0.9±0.2	NS
Calcium, mg/dl	9.4±0.4	9.6±0.5	NS
Phosphorus, mg/dl	3.4±0.5	3.2±0.5	NS
Uric acid, mg/dl	4.9±0.8	3.9±0.2	NS
PTH, pmol/L	70±23	44±18	NS

Ca²⁺, calcium; Na⁺, sodium; K⁺, potassium; Mg²⁺, magnesium; Cl⁻, chloride; NH₄⁺, ammonium; SO₄²⁻, sulfate; PTH, parathyroid hormone.