Ceiling and floor percentages by response group.
| Questions with more than 80% correct (ceiling) | Adolescents (age 15–17 years; n=107) | Young adults (age 18–19 years; n=36) | Parents (n=92) |
| T-shirt for participation | 93.5 | 97.2 | 80.4† |
| Study activities for youth | 91.6 | 91.7 | N/A |
| HIV test results disclosure | 94.4 | 94.4 | 90.2 |
| Voluntary withdrawal | N/A | 94.4 | 85.9 |
| Decisions for study participation | N/A | 88.9 | N/A |
| What happens if you stop study participation | N/A | 86.1 | N/A |
| Purpose of conducting study | N/A | 88.9 | N/A |
| Voluntary participation | N/A | 100 | 93.5 |