Feature Stories - 2013

The Growing Cell Phone Challenge: Latest Strategies

    Release Date: 9/25/2013

    Did you know that one household in the United States converts to cell-only every 6.5 seconds?  By the time you read this abstract, 7 more households will have converted.  By the time you view this webinar on cell phone samples, over 500 more households will have converted!  As cell-only households continue to grow, the optimal cell phone sample is getting larger and larger.  Luckily, our methods and tools for sampling cell phones are increasingly more efficient.  Join us to discuss two of the latest sampling strategies--the cell phone “activity” level and billing zip code, both based on post-sample matching.  The activity level offers the ability to pre-screen cell RDD samples based on the level of outgoing calling activity associated with each cell phone number. This service can improve productivity of RDD cell sample prior to manually dialing by identifying numbers that are most likely to be non-working. The billing zip code offers another glimmer of hope in targeting cell phone RDD to small geographic areas (e.g. county of city). First we had wire centers, then rate centers, and now we have billing zip code (at least for some numbers). We examine the effect of each of these tools on productivity, efficiency, and potential for bias. Finally, we offer a set of recommendations for incorporating these tools into the design of cell sample in dual frame RDD telephone surveys.

    About our Speakers:
    As a member of the Advanced Methods Group, Marci Schalk has been involved in sample design and statistical weighting for many studies, including surveys for the Pew Research Center, ABC News/Washington Post, and the National Oceanic and Atmospheric Administration (NOAA). Ms. Schalk holds a Master’s degree in Survey Methodology from the University of Michigan. Prior to joining Abt SRBI, Ms. Schalk managed the archival and dissemination of social science research data at the Inter-university Consortium for Political and Social Research (ICPSR).

    Randal (Randy) ZuWallack is a Senior Statistician in Abt SRBI’s Advanced Methods Group.  He has 18 years of statistical experience spanning a wide variety of topics including public health, transportation and communications. He has designed and managed surveys for numerous federal agencies such as the U.S. Census Bureau and the Department of Housing and Urban Development; as well as for numerous state and local government agencies. Mr. ZuWallack is co-Director of Abt’s Survey Research Methods Center, a multi-disciplinary community sharing an interest in advancing the field of survey methodology. His current research interests include cell phone data collection methods; address based sampling for in-person interviewing, and sampling households based on geographic coordinates. Mr. ZuWallack joined Abt SRBI in the fall of 2012 after nine years at ICF International preceded by six years at the U.S. Census Bureau. 
    This webinar also benefits from the research experience and expertise of several people. 
    Ashley Hyon (Marketing Systems Group)
    Missy Mosher (Survey Sampling)
    Jonathan Best (Princeton Survey Research Associates)
    David Dutwin (Social Science Research Solutions)
    Tara Merry (Abt SRBI)
    Mark Morgan (Abt SRBI)
    Timothy Michalowski and his GIS team (Abt SRBI)
    Charles DiSogra (Abt SRBI)
    Thank you all for sharing your research.
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