14 Facts About Cohort study

Cohort study is a particular form of longitudinal study that samples a cohort, performing a cross-section at intervals through time.

Cohort study studies represent one of the fundamental designs of epidemiology which are used in research in the fields of medicine, pharmacy, nursing, psychology, social science, and in any field reliant on 'difficult to reach' answers that are based on evidence.

Cohort study studies differ from clinical trials in that no intervention, treatment, or exposure is administered to participants in a cohort design; and no control group is defined.

The study is controlled by including other common characteristics of the cohort in the statistical analysis.

In medicine, a cohort study is often undertaken to obtain evidence to try to refute the existence of a suspected association between cause and effect; failure to refute a hypothesis often strengthens confidence in it.

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The Cohort study groups follow a group of people who do not have the disease for a period of time and see who develops the disease.

Advantage of prospective cohort study data is that it can help determine risk factors for contracting a new disease because it is a longitudinal observation of the individual through time, and the collection of data at regular intervals, so recall error is reduced.

The value of a cohort study depends on the researchers' capacity to stay in touch with all members of the cohort.

Key findings of NCDS and a detailed profile of the Cohort study appear in the International Journal of Epidemiology.

Largest cohort study in Africa is the Birth to Twenty Study, which began in 1990 and tracks a cohort of over 3,000 children born in the weeks following Nelson Mandela's release from prison.

Current cohort study represents a true prospective study where the data concerning exposure are assembled prior to the occurrence of the fact to be studied, for instance a disease.

An example of a current cohort study is the Oxford Family Planning Association Study in the United Kingdom, which aimed to provide a balanced view of the beneficial and harmful effects of different methods of contraception.

Nested case-control study is a case control nested inside of a cohort study.

An example of a nested case-control study is Inflammatory markers and the risk of coronary heart disease in men and women, which was a case control analyses extracted from the Framingham Heart Study cohort.