observational study

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Observational study
In statistics, the goal of an observational study is to draw inferences about the possible effect of a treatment on subjects, where the assignment of subjects into a treated group versus a control group is outside the control of the investigator. This is in contrast with controlled experiments, such as randomized controlled trials, where each subject is randomly assigned to a treated group or a control group before the start of the treatment.
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observational study
observational technique 观察技术


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observational study
(名) 観察的研究

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observational study
n. études observationnelles

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observational study
[estatística] estudo observacional

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