Primary aims | Measurements | Analytic methods |
---|---|---|
Aim 1. Short-term improvement in HIV/AIDS and HIV testing knowledge  HA1: 3-way interaction (mode*language*literacy level)  HA2: 2-way interaction (mode*language or literacy level)  HA3: no interaction (difference by mode only)  HA4: no difference | HIV/AIDS and HIV testing knowledge questionnaire at baseline in ED at time of HIV testing, post- vs. pre-information delivery | • Paired t-tests • Signed-rank tests • MANOVA/ANCOVA • Generalized linear mixed-effects regression |
Aim 2. Retention of HIV/AIDS and HIV testing knowledge at 3, 6, 9, and 12 months  HA1: 3-way interaction (mode*language*literacy level)  HA2: 2-way interaction (mode*language or literacy level)  HA3: no interaction (difference by mode only)  HA4: no difference | HIV/AIDS and HIV testing knowledge questionnaire at 3, 6, 9, and 12 months vs. baseline (post-information delivery) | • Paired t-test for each follow-up vs. baseline • Linear mixed-effects regression (assuming constant degradation over time) • Broken-stick linear mixed-effects regression (for non-constant degradation over time) |