Author's Keywords: Web surveys, Panel data, HIV attitudes	Convention Submission, Review, and Scheduling! All Academic Convention can help with all of your abstract management needs and many more. Contact us today for a quote! Submission - Custom fields, multiple submission types, tracks, audio visual, multiple upload formats, automatic conversion to pdf. Review - Peer Review, Bulk reviewer assignment, bulk emails, ranking, z-score statistics, and multiple worksheets! Reports - Many standard and custom reports generated while you wait. Print programs with participant indexes, event grids, and more! Scheduling - Flexible and convenient grid scheduling within rooms and buildings. Conflict checking and advanced filtering. Communication - Bulk email tools to help your administrators send reminders and responses. Use form letters, a message center, and much more! Management - Search tools, duplicate people management, editing tools, submission transfers, many tools to manage a variety of conference management headaches! Click here for more information.
Association: Name: American Association for Public Opinion Research URL: http://www.aapor.org
Citation: URL: http://www.allacademic.com/meta/p116032_index.html Direct Link: HTML Code:

Baxter, Rodney. and Dean, Elizabeth. "Panel Attrition and its Effects on Results from a Longitudinal Study: An Examination of Changes in Participants and Attitudes in a Web-based Panel Survey of HIV and AIDS Stigma Attitudes" Paper presented at the annual meeting of the American Association for Public Opinion Research, Pointe Hilton Tapatio Cliffs, Phoenix, Arizona, May 11, 2004 <Not Available>. 2009-05-26 <http://www.allacademic.com/meta/p116032_index.html>

Baxter, R. K. and Dean, E. , 2004-05-11 "Panel Attrition and its Effects on Results from a Longitudinal Study: An Examination of Changes in Participants and Attitudes in a Web-based Panel Survey of HIV and AIDS Stigma Attitudes" Paper presented at the annual meeting of the American Association for Public Opinion Research, Pointe Hilton Tapatio Cliffs, Phoenix, Arizona <Not Available>. 2009-05-26 from http://www.allacademic.com/meta/p116032_index.html

Publication Type: Conference Paper/Unpublished Manuscript Review Method: Peer Reviewed Abstract: Longitudinal studies offer the opportunity to examine trends over time both in terms of participation and attitudes. However, the loss of participants from one wave to another can result in bias of survey results. The Study of HIV and AIDS Stigma, conducted for the Centers for Disease Control (CDC), is a longitudinal study of a national, RDD selected Knowledge Networks panel investigating knowledge of HIV and AIDS, as well as attitudes and beliefs surrounding this issue. The survey was initially conducted in summer 2000 with a follow-up in spring 2003. Comparisons are made of panel participants and non-participants between the 2 waves, as well as changes in attitudes. Survey non-participants at time 2 include non-respondents who are still on the panel, and non-respondents from attrition (who have chosen to withdraw from the panel). In addition, we investigate changes in attitudes over time and discuss the implications of differing panel participation on those changing attitudes and how this may result in biased data. Early analysis indicates that participants with more negative attitudes in wave 1 were less likely to participate in wave 2 resulting in potential bias to the results.

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