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longitudinal_observational_cohort_study

A longitudinal study (or longitudinal survey, or panel study) is a research design that involves repeated observations of the same variables (e.g., people) over long periods of time, often many decades (i.e., uses longitudinal data). It is often a type of observational study, although they can also be structured as longitudinal randomized experiments.

Retrospective case control

Prospective cohort study.

longitudinal_observational_cohort_study.txt · Last modified: 2018/05/06 18:10 by administrador