Multivariate logistic analysis of willingness to participate, with demographic, HIV knowledge, attitudes, risk relevant behaviour, concerns, and incentives (n=2661)
| OR | 95% CI | p Value | |
|---|---|---|---|
| Education (primary school or less) | 1.24 | 1.00–1.53 | 0.05 |
| Urban v rural (2 years before entering RTA) | 0.88 | 0.73–1.07 | 0.2 |
| Region (NE v elsewhere; 2 years before entering RTA) | 1.38 | 1.14–1.66 | <0.001 |
| Partner-girlfriend (past 6 months) | 0.69 | 0.55–0.86 | 0.001 |
| Knowledge—known transmission (1+ errors) | 1.49 | 1.08–2.05 | 0.01 |
| Knowledge—endorses casual contact (1+ endorsements) | 1.22 | 1.02–1.46 | 0.03 |
| Would use condoms less in a vaccine trial | 1.28 | 1.04–1.57 | 0.02 |
| Perceived risk of HIV infection (a lot v some/no risk) | 1.84 | 1.49–2.27 | <0.001 |
| Incentive—family/friends' recognition | 1.23 | 0.99–1.54 | 0.06 |
| Incentive—tangible (1+endorsements) | 1.33 | 1.08–1.65 | 0.009 |
| Incentive—help Thai society | 1.72 | 1.38–2.14 | <0.001 |
| Concern—physical harm (1+ endorsements) | 0.62 | 0.49–0.80 | <0.001 |
| Concern—social harm (1+ endorsements) | 0.81 | 0.65–1.02 | 0.07 |
| Concern—family wouldn't want them to join | 0.51 | 0.40–0.64 | <0.001 |
| Concern—signing consent form | 1.12 | 0.84–1.50 | 0.43 |
| Concern—time required by trial | 0.98 | 0.74–1.31 | 0.9 |