General population-based cohort
Alzheimer's disease, Dementia (unclassified), Mild cognitive impairment (MCI), Subjective memory complaints (SMC) or subjective cognitive decline (SCD), Vascular dementia
The Three-City Study (3C Study) is a population-based longitudinal study of the relation between vascular diseases and dementia in persons aged 65 years and older. A total of 9,294 participants (3,649 men and 5,645 women) were recruited from three French cities: Bordeaux (2,104), Dijon (4,931) and Montpellier (2,259).
The principal objective is to estimate the risk of dementia (Alzheimer’s disease and other types) that may be attributed to vascular factors.
In follow up 1 and 2 (2001-2004) participants were interviewed and subjected to physical and cognitive testing. In follow up 3 (2005-2012) participants completed a postal questionnaire. The third, fourth, and fith waves of follow-up examinations started in 2006 and finished in 2012. A sixth follow-up is ongoing.
Last update – 03/02/2017
Bordeaux Population Health Research Center (BPH),
University of Bordeaux,
33076 Bordeaux France