JSM 2011 Online Program

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Abstract Details

Activity Number: 305
Type: Contributed
Date/Time: Tuesday, August 2, 2011 : 8:30 AM to 10:20 AM
Sponsor: Section on Survey Research Methods
Abstract - #301077
Title: Reweighting in the Presence of Nonresponse in Stratified Designs
Author(s): Ismael Flores Cervantes*+ and J. Michael Brick
Companies: Westat Inc. and Westat Inc.
Address: 1600 Research Blvd, Rockville, MD, 20850,
Keywords: Nonresponse ; stratification ; weighting classes
Abstract:

Reweighting a sample using weighting class adjustments is one approach to deal with nonresponse. This approach uses a response model defined as a set of assumptions about the true but unknown response distribution that corresponds to the weighting class. A reweighted estimator is unbiased if the model coincides with the response distribution. However, in most cases, the response model will differ from the true response distribution. In this paper we examine the effect of reweighting when the model fails in stratified designs. The majority of results on model failure in nonresponse in the literature assume a simple random sampling. We expand this to stratified designs and compare the results with other approaches such as nonresponse adjustments that ignore sampling weights.


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