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Principal Investigator(s): CBS News
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CBS News. CBS News Call-Back Poll, March 2008. ICPSR26145-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2009-10-29. doi:10.3886/ICPSR26145.v1
Persistent URL: http://doi.org/10.3886/ICPSR26145.v1
Scope of Study
Subject Terms: attitudes, baseball, Bonds, Barry, Bush Administration (George W., 2001-2009), Clinton, Hillary, Democratic National Convention, gender, Iraq War, McCain, John, national economy, national elections, news media, Obama, Barack, personal finances, political campaigns, presidency, presidential candidates, presidential elections, presidential performance, primaries, public opinion, race, race relations, racial attitudes, racism, sexism, steroid use, voter attitudes
Geographic Coverage: United States
Date of Collection:
Unit of Observation: individual
Universe: Registered voters aged 18 and over living in households with telephones in the contiguous 48 United States.
Data Types: survey data
Data Collection Notes:
The data available for download are not weighted and users will need to weight the data prior to analysis.
The CASEID variable was reformatted in order to make it a unique identifier.
This call-back poll reinterviewed 542 registered voters who had participated in the CBS NEWS MONTHLY POLL #1, MARCH 2008 (ICPSR 26144). This data collection includes their responses to questions from the original poll as well as to the call-back questions. Original survey questions are identified with the prefix "Q", while call-back questions are identified as "RQ".
Variable Q20 contains truncated value labels. Truncated value labels in variables EDUC and Q35 were corrected, and code 38 in variable Q2 was edited to refer to the president in office at the time of the survey. Value labels for unknown codes were added in variable Q35.
This data collection was produced by CBS News, New York, NY.
Sample: This call-back poll re-interviewed registered voters who had participated in the original survey (March 15-18, 2008). In the original survey, a variation of random-digit dialing using primary sampling units (PSUs) was employed, consisting of blocks of 100 telephone numbers identical through the eighth digit and stratified by geographic region, area code, and size of place. Within households, respondents were selected using a method developed by Leslie Kish and modified by Charles Backstrom and Gerald Hursh (see Backstrom and Hursh, SURVEY RESEARCH. Evanston, IL: Northwestern University Press, 1963). The original survey included an oversample of African Americans.
Weight: The data contain weight variables that should be used in analyzing the data. According to the CBS News Web site, the data were weighted to match United States Census Bureau breakdowns on age, sex, race, education, and region of the country. The data were also adjusted for the fact that people who share a telephone with others have less chance to be contacted than people who live alone and have their own telephones, and that households with more than one telephone number have more chances to be called than households with only one telephone number. An oversample of African Americans was conducted for the original survey and the results were then weighted in proportion to the racial composition of the adult population in the United States Census.
Mode of Data Collection: telephone interview
Extent of Processing: ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:
- Created variable labels and/or value labels.
- Checked for undocumented or out-of-range codes.
Original ICPSR Release: 2009-10-29
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