The Lc65+ project is a longitudinal population-based study focusing on the development of frailty after the age of 65.
The Lc65+ cohort consists of three successive samples randomly selected every 5 years from the Lausanne city population office.
Subjects, approximately 1,500 in each sample, are enrolled according to two criteria: a private home address in the city of Lausanne and a year of birth defined by the year of enrollment.
Two exclusion criteria apply: presence of severe cognitive troubles precluding a response to questionnaires and end-of-life situations.
|Sample||Enrolement year||Birth year|
(before World War II)
(during World War II)
Three successive samples were randomly selected every 5 years :