Studies of Welfare Populations: Data Collection and Research Issues. Endnotes

06/01/2002

1.  Nonresponse adjustments are usually conducted by creating a factor or a "nonresponse adjustment weight" for each respondent in the sample. In the final survey analysis, the nonresponse weight may be used with additional adjustment factors that serve other purposes, including sometimes compensating for noncoverage.

2.  The example is hypothetical but is based on actual surveys conducted in a number of counties across the United States.

3.  Note that in the SSI example, samples were selected from the associated frames with equal probability. For cases where sampling involves unequal probabilities of selection, "weighted" sample distributions should be compared to the associated frame distributions. Refer to the section that discusses weighting for unequal probabilities of selection.

4.  A more relaxed assumption is where data are missing completely at random (MCAR). The MCAR model assumes that nonresponse occurs completely at random and does not depend on the characteristics of nonrespondents (Little and Rubin, 1987). In most surveys, however, the MCAR assumption is not realistic, as is shown in many nonresponse bias analyses conducted for state and national surveys (for example, see U.S. General Accounting Office (1999).

5.  The above cell creation can be carried out using APSS AnswerTree. For more information about APSS AswerTree, visit http://www.spss.com

6.  GREG and some similar procedures are available in GES (Generalized Estimation Systems), developed by Statistics Canada. For more information about GES, refer to Estevao et al. (1995).

View full report

Preview
Download

"01.pdf" (pdf, 472.92Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"02.pdf" (pdf, 395.41Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"03.pdf" (pdf, 379.04Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"04.pdf" (pdf, 381.73Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"05.pdf" (pdf, 393.7Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"06.pdf" (pdf, 415.3Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"07.pdf" (pdf, 375.49Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"08.pdf" (pdf, 475.21Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"09.pdf" (pdf, 425.17Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"10.pdf" (pdf, 424.33Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"11.pdf" (pdf, 392.39Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"12.pdf" (pdf, 386.39Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"13.pdf" (pdf, 449.86Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®

View full report

Preview
Download

"14.pdf" (pdf, 396.87Kb)

Note: Documents in PDF format require the Adobe Acrobat Reader®. If you experience problems with PDF documents, please download the latest version of the Reader®