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 ...

The 8th ESRA (European Survey Research Association) Conference was held in Croatia in July 2019, which staged 220 sessions on survey research. Among them, this article focuses on the latest cases of ...

This study reports the findings of a comparison between different non-probability sampling methods applied in a WWW-user-survey. This study reports the findings of a comparison between different ...

The current survey was conducted Aug. 27 to Sept. 24, 2009 among 14,760 respondents in Britain, Bulgaria, the Czech Republic, France, Germany, Hungary, Italy, Lithuania, Poland, Russia, Slovakia, ...

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 ...

Stratified random sampling is a method of sampling that divides a population into smaller groups that form the basis of test ...