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 ...

Detailed information on Pew Research Center international survey methodology, such as mode of interview, sampling design, margin of error, and design effect, for each country we survey, organized by ...

Rotating Random Number Sampling is proposed as a flexible method to evenly distribute survey burden caused by a set of business surveys over enterprises without requiring aligned stratifications. The ...

Targeting matters most. Surveying the wrong audience can lead to misleading data and poor decisions, even if the questions themselves are solid. Weighting shapes reality. Overrepresenting certain ...

The pre-module is a quick reference guide, focusing on the practical steps for conducting a SENS survey. It is not meant to replace already existing survey manuals. To avoid duplication, the user is ...