Table 1.

Subject demographics by age at SLE diagnosis in the Lupus Outcomes Study (n = 885)^*

	Childhood onset (n = 90)	Adult onset (n = 795)	P
Age, mean ± SD (range) years	30.5 ± 12.8 (19–60)	49.9 ± 11.6 (20–83)	< 0.001
Men, n (%)	12 (13.3)	59 (7.4)	0.036
Ethnicity
White	48.9	69.9
Asian/Pacific Islander	16.7	8.6
Hispanic/Latino	15.6	8.6	< 0.001
African American	7.8	7.9
Other	11.0	5.0
Education
Less than high school	4.4	3.2	NS
High school graduate	10.0	12.3
Some college/college graduate or advanced degree	85.6	85.5
Recruitment source
Rheumatology practice	57.8	31.5
Community	42.2	68.5	< 0.001

^*Values are the percentage unless otherwise indicated. SLE = systemic lupus erythematosus; NS = not significant.