Table 2.

Demographics according to group.

	SLE – ICD n = 1,665	SLE – validated n = 71	ANA-associated rheumatic disease n = 1,644	ANA+ Control n = 3,603	p-value a
Age (years ± SD)	50.5 ± 15.6	36.5 ± 15.2	50.5 ± 15.6	50.8 ± 18.3	<0.001
Sex
Female Male	1,491 (89.5%) 174 (10.5%)	65 (91.5%) 6 (8.5%)	1,445 (87.9%) 199 (12.1%)	2,868 (79.6%) 735 (20.4%)	<0.001
Race
White Black Other/Unknown	1,092 (65.6%) 446 (26.8%) 127 (7.6%)	44 (62.0%) 26 (36.6%) 1 (1.4%)	1,330 (80.9%) 213 (13.0%) 101 (6.1%)	2,848 (79.0%) 502 (13.9%) 253 (7.0%)	<0.001
Ethnicity
Hispanic Non-Hispanic Unknown	81 (4.9%) 1,472 (88.4%) 112 (6.7%)	1 (1.4%) 69 (97.2%) 1 (1.4%)	35 (2.1%) 1,467 (89.2%) 142 (8.6%)	152 (4.2%) 3,169 (88.0%) 282 (7.8%)	<0.001

Data are presented as mean ± SD or frequency (%) unless otherwise noted.

^{a p-value by ANOVA or chi-square test for continuous or categorical variables, respectively.}