. Author manuscript; available in PMC: 2014 May 22.

Published in final edited form as: J Rheumatol. 2008 Sep 1;35(11):2179–2186. doi: 10.3899/jrheum.080071

Table 2.

Sample characteristics.

Characteristic	SLE Patients	Controls	p
No.	163	160	ND
Age, yrs, mean ± SD	43.3 ± 11.0	43.5 ± 10.5	0.90
Race, % (n)
African American	50.3 (82)	50.6 (81)	1.00
Caucasian	39.3 (64)	39.4 (63)
Asian	4.9 (8)	5.0 (8)
Hispanic	4.3 (7)	3.8 (6)
Other	1.2 (2)	1.2 (2)
CAC, median (IQR)	0 (0–7.2)	0 (0–0)	0.0003
Homocysteine, μmol/l, mean ± SD (n)	10.4 ± 1.4	9.2 ± 1.4	< 0.0001
African American^*	12.1 ± 1.4 (82)	9.7 ± 1.3 (81)	< 0.0001
Caucasian	10.0 ± 1.3 (64)	9.0 ± 1.5 (63)	0.12
Framingham point scores, median (IQR) (n)	8 (3–13) (161)	8 (2–12) (156)	0.39
GFR, ml/min/1.73m², mean ± SD	90.0 ± 32.5	94.5 ± 20.8	0.14

CAC: coronary artery calcification; GFR: glomerular filtration rate. ND: not determined; IQR: interquartile range.

African American case vs Caucasian case, p = 0.0009; African American control vs Caucasian control, p = 0.21.