Posts Tagged ‘ Nonresponse Bias

Evaluation of Alternative Weighting Approaches to Reduce Nonresponse Bias


With declining response rates, surveys increasingly rely on weighting adjustments to correct for potential nonresponse bias. The resulting increased need to improve survey weights faces two key challenges. First, additional auxiliary data are needed to augment the models used to estimate the weights. Depending on the properties of these auxiliary data, nonresponse bias can be reduced, left the same, or even increased. Thus, the second challenge is to be able to evaluate the alternative weights, when the assumption of “different estimates means less bias” may not hold. Ideally, data need to be collected from as many nonrespondents as possible to provide direct estimates of nonresponse bias. Read more

The Use of GIS Information as Auxiliary Data for Nonresponse Bias Analysis


The Nielsen Company, like most other market research firms, is concerned with falling response rates and the threat of nonresponse bias. The challenge in understanding and adjusting for nonresponse is always the lack of information about the non-responding cases. In recent years, researchers have considered the use of paradata, interviewer observations, and aggregate Census information to provide information about the non-responders. This study introduces and evaluates the use of a new type of GIS-based data, called POI (Points-of-Interest), as a potential auxiliary data source for nonresponse bias analysis. Read more