INSEE revises its statistical values to ensure that they reflect reality as accurately as possible, and to guarantee their relevance and reliability. It uses well-established procedures, standardized and planned according to international standards. It announces revisions simultaneously with their release, or in advance according to a protocol adapted to the source of the revisions, their scope and the sensitivity of the published statistics. All the explanations needed to understand these revisions accompany the dissemination of the statistical sources concerned on the Insee.fr website.

No revisions are made to CIS survey data.