Table 1.

Characteristics of 10,678 Atherosclerosis Risk in Communities study participants with eGFR ≥60 ml/min per 1.73 m² in stone formers versus nonstone formers at visit 4 (1996–1998)

Variable (Visit 4 Unless Specified)	History of Stones (n=856)	No History of Stones (n=9822)	P Value
Age (yr)	63.1±5.7	62.5±5.6	0.002
Men	66.1	42	<0.001
African-American race	9.7	22.8	<0.001
Body mass index (kg/m2)	28.7±5.2	28.8±5.7	0.63
BP (mmHg)
Systolic	127.2±18.1	127.2±18.8	0.95
Diastolic	70.9±9.9	71.1±10.3	0.72
Hypertension	46.8	45.6	0.56
Use of antihypertensive medications	44.7	41.4	0.06
Diabetes	19.5	15.7	0.003
History of coronary artery disease	11.3	7.5	<0.001
Cholesterol (mg/dl)
Total	195.1±33.3	200.7±37.0	<0.001
HDL	45.8±14.9	50.5±16.5	<0.001
LDL	119.9±30.8	122.4±33.4	0.04
Triglycerides (mg/dl)	130.9 (94.9, 180.8)	120.9 (86.9, 170.8)	<0.001
Use of lipid-lowering medications	18.1	13.5	<0.001
Plasma uric acid (mg/dl)	5.7±1.4	5.5±1.5	0.001
History of gout	7.8	5.2	0.001
Allopurinol use	2.6	1.2	<0.001
Diuretic use (%)	8.9	8.7	0.89
eGFR (ml/min per 1.73 m2)	87.7±12.4	88.7±13.3	0.03
Smoking status
Current	13.2	15.1	<0.001
Former	52.0	42.4
Alcohol use (%)
Current drinker	46.3	50.1	0.006
Former drinker	34.3	29.1
High-sensitivity C-reactive protein (mg/L)	2.1 (0.9, 4.5)	2.4 (1.1, 5.5)	<0.001
Study center (%)			<0.001
Forsyth County, North Carolina	37.4	23.6
Jackson, Mississippi	7.9	20.5
Minneapolis, Minnesota	21.4	29.3
Washington County, Maryland	33.3	26.7
Sports score, visit 3	2.6±0.8	2.5±0.8	0.002
Urine albumin-to-creatinine ratio (μg/mg)	4.0 (1.7, 9.7)	3.7 (1.8, 7.3)	0.16

Continuous variables are presented as means ± SDs, percentages, or medians (interquartile ranges) unless otherwise indicated.