Abstract:
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While the USPS Computerized Delivery Sequence File (CDS or CDSF) has been shown to be an effective sampling frame for in-person, mail, and multi-mode surveys in most environments, areas with non-city style addresses or those experiencing demolition and new-construction will be at risk for differential coverage in some modes. While databases such as the NoStatistics or “NoStat” file may contain some of the housing units missing from the CDS, physical listing may still be necessary. Our paper will discuss enhanced (or dependent) listing, a method employed by multiple organizations to improve undercoverage and reduce overcoverage associated with vendor-provided address lists. We describe the advantages and drawbacks associated with enhanced listing, and discuss the potential impacts on costs, training, and resulting survey data.
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