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![8. Case-control and cross sectional studies | The BMJ](https://www.iarticlesnet.com/pub/img/site/s_02.jpeg)
8. Case-control and cross sectional studies | The BMJ
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日期:2024-08-03
An alternative which avoids this difficulty is the case-control or case-referent
design. In a case-control study patients who have developed a disease are ......看更多