Case series

A case series (also known as a clinical series) is a medical research study that tracks patients with a known exposure given similar treatment^[1] or examines their medical records for exposure and outcome.

A case series can be retrospective or prospective and usually involves a smaller number of patients than more powerful case-control studies or randomized controlled trials.

A case series is a type of observational study. Case series may be consecutive^[2] or non-consecutive,^[3] depending on whether all cases presenting to the reporting authors over a period of time were included, or only a selection.

Case series may be confounded by selection bias, which limits statements on the causality of correlations observed.

References

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[urlDefinition_of_case_series_-_NCI_Dictionary_of_Cancer_Terms-1] “Definition of case series – NCI Dictionary of Cancer Terms”.

[urlDefinition_of_consecutive_case_series_-_NCI_Dictionary_of_Cancer_Terms-2] “Definition of consecutive case series – NCI Dictionary of Cancer Terms”.

[urlDefinition_of_nonconsecutive_case_series_-_NCI_Dictionary_of_Cancer_Terms-3] “Definition of nonconsecutive case series – NCI Dictionary of Cancer Terms”.

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Case series

See also

References