On watching this video, students should be able to: Distinguish between an observational and experimental study. Explain the main reason why a randomised experiment can if done well, be used as a test ...

Explain why an observational study can generally only be used to describe associations rather than causation, and put them into the context of the hierarchy of evidence. Discuss why not all research ...

A Kansas State University engineer recently published results from an observational study in support of a century-old theory ...

Chris Pashos and Krista Payne of United BioSource Corporation explore observational or "non-interventional" studies and how they can enhance the clinical development and commercialization process.

We explore the impact of noncompliance in randomized experiments, as well as nonignorable treatment assignment in observational studies. To analyse these research designs, the methods covered include ...