Table 1.

Sample descriptions for clinic and Lupus Outcomes Study (LOS) survey samples.

Variable	Clinic Sample (n=81)	LOS Survey Sample (n=717)
	n (%) or mean (SD), range
Female	75 (93%)	661 (92%)
Age at interview	35 (11), 18-61	51 (12), 22-86
High school education or less	24 (30%)	103 (14%)
Nonwhite	61 (75%)	239 (33%)
Currently employed		324 (45%)
Poverty-level income		78 (11%)
Disease duration	10 (8), 1-44	17 (8), 3-50
Disease activity (SLAQ, over 4 yrs)	--	13 (7), 0-37
Self-rated health fair/poor	--	305 (43%)
SF-36 physical component score	--	38 (12), 8-69
Unable to work	--	218 (30%)
Number of hospitalizations (over 5 yrs)	--	2 (3), 0-35
Average annual MD visits for SLE (over 5 years)	--	12 (10), 0-83

SLAQ = Systemic Lupus Activity Questionnaire