Table 2.

Odds of interest in medical research participation as a healthy volunteer

	Unadjusted odds ratio (95% CI)	Adjusted* odds ratio (95% CI)
Age (years)
18–29	1.0 (ref)	1.0 (ref)
30–44	1.17 (0.79)	1.04 (0.68)
45–59	1.03 (0.68)	1.01 (0.65)
≥60	0.89 (0.44)	0.89 (0.48)
Gender
Male	1.0 (ref)	1.0 (ref)
Female	0.94 (0.73–1.22)	0.95 (0.72–1.25)
Race/ethnicity
White, non‐Hispanic	1.0 (ref)	1.0 (ref)
Black, non‐Hispanic	0.72 (0.48–1.07)	0.71 (0.47–1.06)
Hispanic	1.03 (0.68–1.56)	1.11 (0.70–1.76)
Other, non‐Hispanic	0.87 (0.51–1.50)	0.74 (0.43–1.27)
Education
Less than high school	0.66 (0.40–1.08)	0.63 (0.38–1.06)
High school	1.0 (ref)	1.0 (ref)
Some college	1.56 (1.11–2.20)	1.54 (1.09–2.19)
Bachelors degree or higher	1.96 (1.40–2.75)	1.86 (1.29–2.70)
Household income
Up to $24,999	1.0 (ref)	1.0 (ref)
$25,000–$49,999	0.69 (0.46–1.04)	0.60 (0.39–0.93)
$50,000–$99,999	0.95 (0.65–2.15)	0.74 (0.47–1.17)
$100,000 or more	1.40 (0.93–2.10)	0.90 (0.55–1.49)
Health insurance at time of survey completion
Private	1.0 (ref)	1.0 (ref)
Public	0.69 (0.51–0.94)	1.04 (0.70–1.54)
Other	0.80 (0.37–1.69)	1.00 (0.44–2.28)
None	0.83 (0.56–1.24)	0.97 (0.62–1.51)
Employment status at the time of survey completion
Working	1.0 (ref)	1.0 (ref)
Not working—retired	0.57 (0.38–0.84)	0.69 (0.40–1.20)
Not working—disabled	0.77 (0.46–1.30)	0.97 (0.54–1.75)
Not working—other	1.00 (0.72–1.39)	1.20 (0.84–1.71)

*Adjusted for all the other variables listed in the table.