This document is a research brief based on a contribution by Jan J. M. van Dijk, Maarten Cruyff, Peter G. M. van der Heijden and Suzanne L. J. Kragten-Heerdink. It presents Multiple Systems Estimation for estimating the number of victims of trafficking in persons by generating a sound estimate of the ‘dark figure’, which is the unknown data that is undetected and unreported.
For more information or to have access to other resources from UNODC, click here.