Table 2.
First Three Reasons Given for Willingness or Unwillingness to Participate by Willingness to Participatea
| Reason | Willing to Participate (n) | Unwilling to Participate (n) | χ2 | p |
| Money | 7.7% (2) | 6.7% (1) | Fisher's exact | 1.00 |
| It is a risk | 55.2% (16) | 75.0% (12) | Fisher's exact | 0.22 |
| Don't like research | 3.8% (1) | 66.7% (12) | Fisher's exact | < 0.001 |
| Treatment-related benefits | 50.0% (15) | 26.7% (4) | Fisher's exact | 0.20 |
| Altruism | 82.8% (24) | 25.0% (4) | Fisher's exact | < 0.001 |
| Other (psychotic) response | 0% (0) | 5.3% (1) | —b | — |
a
Not everyone gave a third reason. The percentages for answers and the chi-square test of the differences in answers are based on those who did, 26 of those willing to participate and 15 of those unwilling to participate. The percentages for “No third reason given” are based on the full sample of 33 willing to participate and 19 unwilling to participate.
b
N too small to conduct a statistical test.