Table 2.

Respondent Characteristics

Characteristic	All survey respondents (n = 1095)	Respondents who answered at least one open-ended question (n = 834)
Sex (% male)	49.0	46.3
Age
21–26 years	7.9	6.1
27–44 years	37.4	34.0
45–64 years	37.2	39.7
≥ 65 years	17.6	19.3
Race
white	74.0	75.3
Asian	2.8	2.8
African American	13.1	12.4
other or multiracial	10.1	9.6
Hispanic ethnicity	16.1	14.3
Education
high school or less	13.9	11.7
some college or associate’s degree	30.5	31.6
college graduate	34.4	34.3
graduate or professional school	21.2	22.5
Household income
≤ $30,000	16.5	14.8
> $30,000–$55,000	23.2	23.4
> $55,000–$95,000	29.5	29.6
> $95,000	30.8	32.2
Self-reported health status
excellent	18.3	18.0
very good	40.7	42.1
good	29.0	28.1
fair	10.8	10.7
poor	1.3	1.2
Prior clinical research participant	9.2	8.5
Has children	63.2	64.0