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type of study

— Key features of research methods used to categorize types of studies


research design

Full explanation:

Studies can be categorised in different ways, and different names are sometimes used for the same study design.

Examples of study designs that can be used to assess treatment effects include randomized studies  and non-randomized studies

Those two broad categories of studies can be further divided into different types of randomized and non-randomized studies. For example, types of non-randomized studies used to assess treatment effects include cohort studies, case-control studies, and controlled before-after studies, among others.

Some study designs are more suited than others for answering specific types of research questions.

See also:

research methods  ·  risk of bias

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