Individual files are made available to researchers via the Centre d'Accès Sécurisé aux Données (CASD), subject to the agreement of the Comité du secret statistique.

Production and Research Files (PRF) are available to researchers via the Quetelet-Progedo Diffusion network. Intermediate categories of detailed files concerning household surveys, these FPRs respect statistical secrecy but offer a greater level of detail than the «  all public » files.

FPR files are also produced, under certain conditions, for organisations with a public service mission such as SSMs, international organisations and public services.