The Haut Conseil de la santé publique (High Council for Public Health), in conjunction with the departments of the Ministry of Health and the health authorities and agencies, identifies the need for information on changes in the state of health of the population and inequalities in health, as well as on the effects of the implementation of policies likely to have an impact on health, and proposes, where appropriate, to the Minister of Health the studies and information research required to meet these needs. This analysis is reassessed at least every ten years.