Table I.

Comparison of continuous variables between SLE cases (abnormal total plaque area (TPA)) and SLE controls (normal TPA)

	Controls (n=37)			Cases (n = 14)
Variable	mean/median	std erra	IQRb	mean/median	std erra	IQRb	p value
Total Plaque Area (cm2)	0		0.181	0.808		0.727	<0.0001
C4 (mg/dl)	17		9	23		8	0.02
Hemoglobin (m/mm3)	11.4	0.2		12.4	0.5		0.02
SLEDAI Score	4		5	2		4	0.03
25(OH) Vitamin D	19.9		14.3	13.1		11.9	0.03
Anti-dsDNA antibodies (IU)	94		229	8		30	0.04
Years since SLE diagnosis	5		10	13		8	0.04

^aStandard error

^bInterquartile range