bn:00780879n
Noun Concept
Categories: Articles with short description, Epidemiological study projects, Statistical data types, Cohort study methods, Observational study
EN
longitudinal study  follow-up study  Long-term follow-up study  Longitudinal analysis  longitudinal data
EN
A longitudinal study is a research design that involves repeated observations of the same variables over long periods of time. Wikipedia
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EN
A longitudinal study is a research design that involves repeated observations of the same variables over long periods of time. Wikipedia
A research study that involves repeated observations of the same items over long periods of time — often many decades Wikipedia Disambiguation