Table 1. Participant demographics.

	Gulf War illness (n = 20)	Controls (n = 20)	p
Age in years ± SEM (range)	49 ± 1.8 (41–65)	48 ± 1.9 (39–66)	ns
% Male	100	100	ns
% Married	65	35	ns
Ethnicity (%)
Caucasian	55	55	ns
Hispanic	15	15	ns
African-American	20	20	ns
Asian	5	5	ns
Native American	5	5	ns
Education (%)
High school graduate	5	5	ns
Technical school	0	5	ns
Associate’s Degree	40	40	ns
Bachelor’s Degree	30	40	ns
Master’s Degree	20	5	ns
Doctorate	5	5	ns