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[How do I evaluate and utilize information provided by observational study]. | LitMetric

The strength of observational study is the utilization of large materials in order to evaluate the risk factors and prognosis of disease, rare adverse effects of treatments and their everyday effectiveness. Observational studies are, however, associated with a higher risk of bias as compared with randomized controlled studies. Whereas the effectiveness of individual interventions under ideal conditions must be resolved in randomized studies, the effectiveness of treatment chains under routine healthcare conditions can be assessed only through observational studies.

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