Sano M, et al. - Researchers evaluated home-based assessment of people aged > 75 years for dementia prevention in this randomized clinical trial. They compared feasibility and efficiency, ability to capture change over time using in-home instruments, and ability to predict cognitive conversion using predefined triggers in a randomized clinical trial in mail-in questionnaire/live telephone interviews, automated telephone/interactive voice recognition, and internet-based computer Kiosk technologies. Triggering was linked to a greater likelihood of conversion but statistically significant only in mail-in questionnaire/live telephone interviews. In all, relatively low efficiency of internet-based assessment vs testing by live assessors may have implications for internet-based recruitment and evaluation efforts currently proposed for diverse populations.