Numbers, Facts and Trends Shaping Your World

The Diagnosis Difference

Methods

About this study

The 2012 Health Survey, sponsored by the Pew Research Center and the California HealthCare Foundation, obtained telephone interviews with a nationally representative sample of 3,014 adults living in the United States. Telephone interviews were conducted by landline (1,808) and cell phone (1,206, including 624 without a landline phone). The survey was conducted by Princeton Survey Research Associates International. Interviews were done in English and Spanish by Princeton Data Source from August 7 to September 6, 2012. Statistical results are weighted to correct known demographic discrepancies. The margin of sampling error for the complete set of weighted data is ±2.4 percentage points.

Details about design and data collection procedures, as well as survey results, can be found at:

https://www.pewresearch.org/internet/Shared-Content/Data-Sets/2012/September-2012–Health-Tracking-(prelim).aspx

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