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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 - #304351
Title: Venn Diagrams, Probability 101, and Sampling Weights Computed for Dual-Frame Telephone RDD Designs
Author(s): Trent Buskirk, Ph.D.*+ and Jonathan Best
Companies: The Nielsen Company and Princeton Survey Research International
Address: 8084 Watson Road, St. Louis, MO, 63119, United States
Keywords: dual frame design ; sampling weights ; cell phone sampling ; single frame estimator ; compositing factor

The continued rise in cell phone penetration creates a real potential for undercoverage bias in many RDD sample surveys. To respond to such threats researchers have begun implementing dual frame RDD sampling strategies. In this paper we present a method for constructing first-stage sampling weights derived under an overlapping, dual frame design (e.g. cell and landline RDD numbers) based on probability 101 fundamentals. Because these two frames potentially overlap at the user level, selection probabilities must be adjusted for multiplicity of selection. Our method resembles weighting strategies consistent with a "single frame" approach and does not require estimation of a compositing factor traditionally used in the "dual frame" approach.

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