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Centre d'accès sécurisé aux données

CASD is a public interest group (consortium) bringing together INSEE, GENES, CNRS, École Polytechnique and HEC Paris created by interministerial decree of 29 December 2018.

The main purpose of the consortium is to organize and implement secure access services for confidential data for non-profit research, study, evaluation or innovation, activities described as “research services”, mainly public. Its mission is also to promote the technology developed to secure access to confidential data (public and private).


Constances is a “generalist” epidemiological cohort made up from a representative sample of 200,000 adults aged 18 to 69 on inclusion, consultants from the Social Security Health Examination Centers (CES).