Table 1.

Demographic features of study groups

Group	Age (yrs)	ANA (EU)	Female (%)	AA (%)	Hispanic (%)
HC High ANA (n = 18)	33.8 ± 3.4*	78.4 ± 10.0*	83	22	6
HC Low ANA (n = 16)	43.1 ± 3.7	7.0 ± 0.6	75	25	0
SLE (n = 14)	38.0 ± 4.0	182.4 ± 15.4	93	43	7
P**	0.2	0.001#	0.4	0.4	0.6

*Values represent mean and standard error of the mean. **P-values were calculated by one-way ANOVA or Fisher's exact test. ^# Mean ANA in SLE was significantly higher than in the High ANA HC group (P <0.05). ANA, antinuclear antibodies; SLE, systemic lupus erythematosus.