Table 1.

Study sample characteristics^a

	Cases, N = 1389	Controls, N = 2139	P-value
Ageb, years	62 (54, 69)	56 (50, 63)	<0.001
Male gender, %	48	47	0.61
Smoking status (cigarettes past year)
Yes	206	291	0.52
No	1175	1549	0.52
Diabetes, %	14	7	<0.001
Systolic blood pressure, mmHg	130 (118, 142)	124 (112, 136)	<0.001
Diastolic blood pressure, mmHg	75 (69, 81)	75 (69, 81)	0.59
Body mass index (kg/m2)	27.6 (24.8, 31.0)	26.8 (24.1, 30.2)	<0.001
Total cholesterol (mmol/L)	5.23 (4.66, 5.93)	5.28 (4.68, 5.96)	0.62
High-density lipoprotein cholesterol (mmol/L)	1.22 (0.98, 1.58)	1.29 (1.06, 1.61)	<0.001
Cystatin C (mg/L)	0.95 (0.86, 1.09)	0.91 (0.82, 1.01)	<0.001
eGFRcys, mL/min/1.73m2	82 (69, 92)	86 (76, 97)	<0.001
Calcium (mmol/L)	2.40 (2.33, 2.45)	2.38 (2.32, 2.43)	0.11
Phosphate (mmol/L)	1.14 (1.06, 1.26)	1.13 (1.06, 1.23)	0.05
1-25 Hydroxy vit D (ng/mL)	19 (14, 24)	19 (15, 24)	0.40

^aData are expressed as proportions or median (interquartile range).

^bData available for 3221 subjects.