Pew Research Center

Advances in Telephone Survey Sampling

Note: This report was updated on Dec. 30, 2015 to reflect the January-July 2015 National Health Interview Survey estimates released on December 1, 2015. Telephone surveys face numerous challenges, but ...
Pew Research Center

When surveying small populations, some approaches are more inclusive than others

Survey researchers increasingly recognize that a single survey of the general public can rarely represent the views of small groups of Americans. Such surveys frequently have too few interviews with ...
Medscape

Improving Clinical Trial Sampling for Future Research

Clinical trial samples collected for pharmacogenomic and future research are vital resources for the development of safe and effective drugs, yet collecting adequate, representative sample sets in ...
National Academies of Sciences%2c Engineering%2c and Medicine

Guidelines for Project Selection and Materials Sampling, Conditioning, and Testing in WMA Research Studies

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...