Hi, friend! Based on the evaluation research for inmate services, how to track and retain participants is another big challenge, particularly if the period following probation is part of the project. May I ask your opinions on it? Many thanks!

Hope it is useful

Ok, I see.

Inmates participating in evaluative projects indeed demonstrate an exceptionally high attrition rate due to various factors (transfer, release, court appearances, isolation, vulnerability to relapse, unreachability, loss of interest in the research, precarious situation when leaving prison). It is estimated that the attrition rate for projects involving a prison population is 10% at best, 50% at worst, and typically around 25%.