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Study design
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 |
|---|---|---|
| 1 (before World War II) |
2004 | 1934-1938 |
| 2 (during World War II) |
2009 | 1939-1943 |
|
3 |
2014 |
1944-1948 |
Three successive samples were randomly selected every 5 years :
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