Table 1.

Adjusted odds ratios from logistic regression modeling of having 1 or more exclusionary medical conditions.

Covariate	Adjusted odds ratio (95% CI)
Age in 2005 (years)**
<40	1.00*
40 to 49	1.47 (1.32–1.63)
50 to 59	2.86 (2.55–3.22)
60 +	4.31 (3.62–5.12)
Sex**
Male	1.00*
Female	1.93 (1.73–2.15)
Deployment status**
Gulf Era	1.00*
Gulf War	1.32 (1.21–1.44)
Education**
< High school	1.00*
High school degree	1.05 (0.68–1.61)
Some college, no degree	1.26 (0.82–1.92)
Associate degree	1.13 (0.73–1.75)
Bachelors degree	0.96 (0.60–1.43)
Masters, doctorate, or professional degree	1.11 (0.71–1.72)
Annual household income**
<$20,000	1.00*
$20,000 to $34,999	0.59 (0.49–0.72)
$35,000 to $49,999	0.48 (0.40–0.58)
$50,000 to $74,999	0.42 (0.35–0.50)
$75,000 to $99,999	0.39 (0.32–0.48)
>$100,000	0.36 (0.29–0.44)

^*Referent category.

^**p<.0001 from Wald chi-square test.