Study design
The Lc65+ project is a population-based longitudinal study with cohort-sequential design.
The Lc65+ cohort consists of four successive samples randomly selected every 5 or 10 years from the Lausanne city population office.
Participants, 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
Sample
Enrolement year
Enrolement year
Birth year
Birth year
Sample
C1 (before World War II)
Enrolement year
2004
Birth year
1934-1938
Sample
C2 (during World War II)
Enrolement year
2009
Birth year
1939-1943
Sample
C3 (early baby boom)
Enrolement year
2014
Birth year
1944-1948
Sample
C4 (mid-baby boom)
Enrolement year
2024
Birth year
1954-1958
Four successive samples were randomly selected every 5 or 10 years:
