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 ...

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...

The analysis in this report is based on a self-administered web survey conducted from Sept. 26 to Oct. 23, 2023, among a sample of 1,453 dyads, with each dyad (or pair) comprised of one U.S. teen ages ...

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 ...

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 ...

Let us start with the biggest paradox. In all probability, you have never been interviewed for any of the opinion polls. How can the polls then claim to reflect ?public opinion?? The story goes that a ...

Children tap the legs for local seniors at an elderly care center in Deqing County of Huzhou City, east China's Zhejiang Province, Oct. 10, 2024. Photo: Xinhua The National Bureau of Statistics is set ...