-
- Jason W Busse and William T Obremskey.
- Institute for Work and Health, 481 University Avenue, Suite 800, Toronto, ON M5G 2E9, Canada. jbusse@iwh.on.ca
- J Bone Joint Surg Am. 2009 May 1; 91 Suppl 3: 15-20.
AbstractMany surgical questions are not amenable to investigation with a randomized controlled trial; thus, investigators must select an appropriate observational study design. Case-control studies are relatively inexpensive and can be conducted in comparatively little time. Although there are important methodological limitations associated with this trial design, case-control studies can provide important insight into the association between one or more exposures and a specific outcome. They are particularly useful when the outcome of interest is rare or when the time to development of the outcome is long. We present an overview of the case-control study, with a focus on trial design and interpretation of results.
Notes
Knowledge, pearl, summary or comment to share?You can also include formatting, links, images and footnotes in your notes
- Simple formatting can be added to notes, such as
*italics*,_underline_or**bold**. - Superscript can be denoted by
<sup>text</sup>and subscript<sub>text</sub>. - Numbered or bulleted lists can be created using either numbered lines
1. 2. 3., hyphens-or asterisks*. - Links can be included with:
[my link to pubmed](http://pubmed.com) - Images can be included with:
 - For footnotes use
[^1](This is a footnote.)inline. - Or use an inline reference
[^1]to refer to a longer footnote elseweher in the document[^1]: This is a long footnote..