The EUROSTROKE cohorts: a short description and data analytical approach.

This paper describes the design and methodology of the participating cohorts in the EUROSTROKE project. Information is given about the cohort sampling, its size, the follow up procedures and event classification. Information is also given about the measurement of the cardiovascular and cerebrovascular risk factors in each of the cohorts separately. The cohorts described are the Caerphilly study in Cardiff, United Kingdom; the Kuopio Ischaemic Heart disease study in Kuopio, Finland; the Portugal study in Coimbra, Portugal; the EPIC cohort in Athens, Greece; the Ilsa study from Firenze, Italy; the Rotterdam Study in Rotterdam, the Netherlands, and the Novosibirsk cohort in Novosibirsk, Russia.