University students are an easy source of research subjects ... based on such a narrow and nonrepresentative sample of the population. Critically, it suggests that many experimental results ...

Faculty in the Division of Biostatistics serve as principal investigators on several funded research projects, a sample of ...

But, the researchers on this new effort note that little work has been done to assess population numbers prior to their arrival. In this new effort, the research team sought to fill in some of the ...

This Pew Research Center survey was conducted among a nationally representative sample of adults to provide estimates of the U.S. population’s religious composition, beliefs and practices.