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About the poll

This is the 22nd joint survey by The Washington Post and the Henry J. Kaiser Family Foundation. The partners together developed and analyzed the “2011 Survey of D.C. Residents,” but each organization bears sole responsibility for the work that appears under its name. The Post and the Kaiser Family Foundation — a nonprofit agency that researches health care and other issues — paid for the survey, which was conducted by telephone from May 10 to May 31 among a representative random sample of 1,342 adults ages 18 and older living in the District. The sample includes additional interviews with randomly selected African Americans, for a total of 812 black respondents. Results for all groups have been adjusted to reflect their actual distribution in Washington. Interviews were conducted on conventional and cellular phones and carried out in English and Spanish by Social Science Research Solutions of Media, Pa. The margin of sampling error for results based on the total sample is 3.5 percentage points. The error margin is 4 percentage points for the African American sample and 6.5 points for the sample of non-Hispanic whites.

The project team from the Kaiser Family Foundation included Mollyann Brodie, senior vice president for executive operations and director of public opinion and survey research; Claudia Deane, associate director; Sarah Cho, survey analyst; and Cara James, director of the Disparities Policy Project.

Complete data from the poll are available at www.washingtonpost.com/behindtheheadlines.

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