Table 2.
Participant responses to knowledge items on questionnaire
| Questionnaire items (response choices, with correct answer in bold) | African Americans (n=64) |
Whites (n=249) |
Total sample (N=313) |
|---|---|---|---|
| % Responding correctly | |||
| Can the APOE genetic test predict with certainty whether one will get AD?a (Yes; no; undecided) |
28% | 58% | 52% |
| What is the average person’s lifetime risk of getting AD?a (>75%; 45–50%; 10–15%; 1–5%) |
36% | 52% | 48% |
| How are people’s chances of developing AD different if they have an affected parent or sibling? (the same as everyone else;somewhat higher than people in general; much higher than people in general) |
70% | 75% | 74% |
| How does having APOE ε4 affect one’s chances of getting AD?a (there is no effect, makes one somewhat more likely to get AD,makes one much more likely to get AD) |
40% | 62% | 57% |
| Mean knowledge items answered correctly, out of four (SD)a | 1.8 (1.1) 0–4 | 2.5 (1.1) 0–4 | 2.3 (1.1) 0–4 |
a
White > African American; p<.05