Table I.

Patient demographics for the three study groups

SLEHealthySAID
No. of patients354417
Age, mean (range)a40 (21–73)29 (21–61)48 (24–80)
% Femaleb914364
Racec
 % Caucasian496873
 % African-American14020
 % Asian2070
 % Other17257
  • a p < 0.001 for SLE and for SAID compared to healthy.

  • b p < 0.001 for SLE compared to healthy; p = 0.13 for SAID compared to healthy.

  • c Age and race unavailable for two patients in SAID group.