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 ...

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 ...

All respondents are randomly selected from a national registered voter list sourced from Aristotle. The survey employs a probability proportionate to size method, which means the number of respondents ...

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 ...

Official household surveys are important sources of information: they support policy and decision-making for a wide range of government programs. The uses of household survey data are broad, from ...

SHELTON, Conn., March 15, 2011 /PRNewswire/ -- Survey Sampling International (SSI)—the leading global provider of online and offline sampling solutions—has appointed Chris DeAngelis to head its new ...

Survey Sampling International (SSI) and Opinionology today announced that they have entered into an agreement to combine, pending regulatory approval, bringing together two of the world's leading ...