Table 1 Respondent characteristics
|  | Round 1 (n = 21, 100%) | Rounds 2 and 3 (n = 18, 86% retention from Round 1) |
|---|---|---|
Site | ||
 A | 15 (71%) | 12 (67%) |
 B | 1 (5%) | 1 (6%) |
 C | 5 (24%) | 5 (28%) |
Prior research experience | ||
 Yes | 4 (19%) | 2 (11%) |
 No | 13 (62%) | 12 (67%) |
 Not sure or don’t remember | 4 (19%) | 4 (22%) |
Age | ||
 18–24 | 2 (10%) | 2 (11%) |
 25–34 | 3 (14%) | 3 (17%) |
 35–44 | 7 (33%) | 5 (28%) |
 45–54 | 2 (10%) | 2 (11%) |
 55–64 | 3 (14%) | 2 (11%) |
 65–74 | 3 (14%) | 3 (17%) |
 75 or older | 1 (5%) | 1 (6%) |
Gender identity | ||
 Male | 3 (14%) | 2 (11%) |
 Female | 16 (76%) | 15 (83%) |
 Other: Trans man, Terran | 2 (10%) | 1 (6%) |
Race/ethnicity | ||
 Asian | 2 (10%) | 2 (11%) |
 Black or African American | 4 (19%) | 3 (17%) |
 White or European American | 11 (52%) | 11 (61%) |
 Hispanic/Latino(a) | 1 (5%) | 1 (6%) |
 Selected > 1 category | 2 (10%) | 1 (6%) |
 Unknown/none of these fully describe me | 1 (5%) | 0 (0%) |
Annual household income | ||
 Less than $20,000 | 6 (28%) | 5 (28%) |
 $20,000 to $39,999 | 7 (33%) | 5 (28%) |
 $40,000 to $59,999 | 2 (10%) | 2 (11%) |
 $60,000 to $79,999 | 0 (0%) | 0 (0%) |
 $80,000 to $99,999 | 3 (14%) | 3 (17%) |
 $100,000 to $139,999 | 1 (5%) | 1 (6%) |
 $140,000 or more | 2 (10%) | 2 (11%) |
Highest level of education | ||
 High school diploma or the equivalent such as GED | 2 (10%) | 2 (11%) |
 Trade or vocational school such as Beauty School or Electrical School | 3 (14%) | 2 (11%) |
 Some college | 4 (19%) | 3 (17%) |
 Associate’s degree or a two-year college degree | 2 (10%) | 2 (11%) |
 Bachelor’s degree or a four-year college degree | 5 (24%) | 4 (22%) |
 Master’s degree | 3 (14%) | 3 (17%) |
 Advanced degree such as a PhD, a Law degree, or a Medical degree | 2 (10%) | 2 (11%) |
Health insurance | ||
 Yes, public insurance, including Medicaid, Medicare, or other government-based plans | 11 (52%) | 9 (50%) |
 Yes, private insurance, including employer-based, direct-purchased, or TRICARE or other military insurance | 8 (38%) | 7 (39%) |
 Yes, other | 1 (5%) | 1 (6%) |
 Unknown | 1 (5%) | 1 (6%) |
Likelihood of joining a cancer research study | ||
 Not at all or a little likely | 1 (5%) | 1 (6%) |
 Somewhat likely | 6 (29%) | 6 (33%) |
 Very or extremely likely | 14 (67%) | 11 (61%) |