Case study research design and methods
This article provides insufficient context for those case study research design and methods with the subject.
Please help improve the article with a good introductory style. Some of the considerations design are shared under the more general topic of design of experiments but and can be others, in particular methods case patient confidentiality and ethics. When choosing study study design, many factors must be taken into account. Different types of studies are subject to different types research bias. For example, recall bias is likely to occur in cross-sectional or case-control studies where subjects are asked to recall exposure to risk factors.
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The ecological fallacy may occur when conclusions about individuals are drawn from analyses conducted on grouped data. The nature of this type of analysis tends to overestimate the degree of association between variables. Additionally, seasonal variations and weather patterns can affect a seasonal study. The term retrospective study is sometimes used as another term for a case-control study. This use of the term «retrospective study» is misleading, however, and should be avoided because other research designs besides case-control studies are also retrospective in orientation. Superiority trials are designed to demonstrate that one treatment is more effective than a given reference treatment.
This type of study design is often used to test the effectiveness of a treatment compared to placebo or to the currently best available treatment. Non-inferiority trials are designed to demonstrate that a treatment is at least not appreciably less effective than a given reference treatment. Equivalence trials are designed to demonstrate that two treatments are equally effective. A dictionary of epidemiology», 6th edn, New York: Oxford University Press. This article needs additional citations for verification.
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They can either donate an electron to or accept an electron from other molecules, therefore behaving as oxidants or reductants.
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