Test-retest correlations for questions common to all and specific to adolescents, young adults and parents (n=74)*
| Question | N | Tetrachoric/polychoric |
| Common to all | ||
| Have you been given the name and phone number of the person to contact if you have any questions about the study? | 74 | 0.86 |
| Will you receive a T-shirt for taking part in the study? | 74 | 0.6 |
| How were participants selected into different groups in this study? | 74 | 0.57 |
| In your own words, can you tell me what the purpose of the research study is? (open) | 73 | −0.92 |
| What is the difference between taking part in this study and going to the clinic for voluntary HIV testing? (open) | 72 | 0.87 |
| Are there any bad things that could happen by taking part in this study? If yes, what are they? (open) | 70 | 0.9 |
| If you had a question or concern about the study, who would you call? (open) | 74 | 0.72 |
| Young adults and adolescents | ||
| Have you been told you can withdraw from the study at any time? | 45 | 0.75 |
| During the study, will anyone not working with KEMRI or the nearest clinic know about your health information? | 44 | 0.62 |
| At what point can you leave the study? | 45 | 0.94 |
| What does it mean when you sign the study consent form?† | 45 | 0.19 |
| What happens if you decide to stop taking part in the study? | 45 | 0.86 |
| Which of the following describes best why the study is being done? | 45 | 0.51 |
| Which of these activities were you asked to take part in today? | 45 | 0.62 |
| Will you be told your HIV test results during the study?‡ | 45 | N/A |
| Other activities you might be invited to do? | 45 | 0.6 |
| If you test positive for HIV, will you be offered free treatments? | 45 | 0.66 |
| If you are invited to participate in additional interviews for this study, how will you be compensated for your participation? | 45 | 0.73 |
| Which describes one of the main risks involved in the study? | 45 | 0.67 |
| Which describes the main benefit of taking part in the study?† | 45 | 0.26 |
| In your own words, can you tell me what makes you eligible to participate in this study? (open) | 45 | 0.9 |
| How long will you be involved in the study? (open) | 45 | 0.86 |
| What will you be asked to do as a participant in the study after you receive your HIV test results? (open)† | 45 | 0.47 |
| Adolescents only | ||
| If you want to join the study, but your parent/guardian does not agree, can you still join the study? | 33 | 0.64 |
| If your parents wants you to join the study, but you do not want to, are you still allowed to refuse?† | 33 | 0.45 |
| Unique to young adults | ||
| Have you been told that you can freely decide whether you will take part in this study?‡ | 12 | N/A |
| How did you decide to join the study?‡ | 12 | N/A |
*Post hoc analysis with cross-tabulations were used to further explore the low correlation coefficient.
†A correlation coefficient could not be obtained for this item. Cross-tabulations were used to examine relationships within the data.
‡For complete questions with responses, see online supplementary appendix.
KEMRI, Kenya Medical Research Institute.