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Abstract Details

Activity Number: 449
Type: Topic Contributed
Date/Time: Wednesday, August 1, 2012 : 8:30 AM to 10:20 AM
Sponsor: Section on Survey Research Methods
Abstract - #305430
Title: An Approach for Incorporating an Undersampled Cell Phone Frame in a Dual-Frame Telephone Survey Through Weight Attenuation
Author(s): Elizabeth Ormson*+ and Kennon R. Copeland and Kirk M. Wolter and N. Ganesh and Wei Zeng and Stephen J. Blumberg
Companies: NORC and NORC and NORC and NORC and NORC and National Center for Health Statistics
Address: 6306 Arbor Way, Elkridge, MD, 21075, United States
Keywords: Cell Telephone Sample ; Weighting ; Dual Frame Design

The National Center for Health Statistics reported that the percentage of wireless-only households had grown to 29.7% in 2011. This has substantial implications for any telephone survey designer who seeks a representative sample of the population and to create unbiased estimates. Cell phone samples are more costly to field and thus typically undersampled compared to landline phone samples, leading to larger weights in the cell phone sample and a resultant increase in variance and design effect. One option is to decrease variances through attenuation of cell sample weights, although bias impact must be considered.

This presentation will use the 2009-2010 National Survey of Children with Special Health Care Needs (NS-CSHCN) as a basis for considering an alternative weighting approach for a combined landline and cell phone sample where the cell phone frame is underrepresented. This dual frame design resulted in different sampling rates from the landline and cell telephone frames, and by state. We will discuss a method of attenuating the NS-CSHCN cell sample weights and the resultant impact on bias, variance, and mean squared error of estimates at both the state and national level.

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