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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: J Empir Res Hum Res Ethics. 2018 Oct 8;13(5):494–510. doi: 10.1177/1556264618804962

Table 1.

Demographics of Study Participants (N=178)

n %
Gender
Women 47 26.4%
Men 131 73.6%
Clinical Trial Experience
1 study 38 21.3%
2–4 studies 49 27.5%
5–10 studies 45 25.3%
11–200 studies 46 25.8%
Race/Ethnicity
Non-Hispanic white 57 32.0%
Black / African American 72 40.4%
American Indian 2 1.1%
Asian 6 3.4%
Hawaiian / Pacific Islander 2 1.1%
More than one race 13 7.3%
Hispanic1 38 21.3%
Age
18–21 6 3.4%
22–29 34 19.1%
30–39 58 32.6%
40–49 54 30.3%
50+ 26 14.6%
Household Income2
Less than $10,000 30 16.9%
$10,000 to $24,999 52 29.2%
$25,000 to $49,999 71 39.9%
$50,000 to $74,999 13 7.3%
$75,000 to $99,999 7 3.9%
$100,000 or more 4 2.2%
Educational Attainment
Less than high school 12 6.7%
High school or GED 37 20.8%
Some college 52 29.2%
Trade/technical/vocational training 19 10.7%
Associate’s degree 21 11.8%
Bachelor’s degree 32 18.0%
Graduate degree 5 2.8%
Employment Status3
Full-time/Business owner (self-employed) 45 25.3%
Part-time/Independent or Irregular Contractor 60 33.7%
Unemployed/Retired 73 41.0%
1

The category Hispanic includes all racial groups, of which we have those that identify as white, black, more than one race, American Indian, and Native Hawaiian/Pacific Islander in our sample.

2

Data for household income was not reported by one participant.

3

These data are based on consolidated definitions of each employment category that we used to standardize self-reported data from participants.