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Abstract Details
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Activity Number:
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241
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Type:
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Contributed
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Date/Time:
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Monday, August 1, 2011 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Survey Research Methods
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| Abstract - #302514 |
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Title:
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Using Order Sampling to Achieve a Fixed Sample Size After Nonresponse
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Author(s):
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Pedro J. Saavedra and Lee Harding*+ and Francine Barrington
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Companies:
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ICF Macro and ICF Macro
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Address:
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11785 Beltsville Drive, Suite 300, Calverton, MD, 20705,
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Keywords:
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replacements ;
Pareto sampling ;
adjustments ;
simulations ;
sequential Poisson sampling ;
propensity categories
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Abstract:
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There are situations when a study requires a fixed sample size, either for contractual reasons or because the cost of collecting data for too many cases is prohibitive. This makes the preferred practice of oversampling and then adjusting for nonresponse impractical. Under certain conditions a simple random sample can be obtained by randomly sorting the frame and selecting the first n in the random order. This yields a fixed initial sample size, but a variable respondent sample. In a case where potential respondents beyond the targeted number of completes can be approached in sequential order (exhausting contact attempts before going to the next unit), the sampling process can continue until the desired number of completes is obtained. Nonresponse adjustments can then be made as if the combined set of respondents and nonrespondents constituted an initial sample. A similar approach to the
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