Screening is the process by which elements sampled from a sampling frame are evaluated to determine whether they are eligible for a survey. Ideally, all members of the sampling frame would be eligible, but eligibility information is often not available prior to constructing the frame. In this case, the sampling frame must be narrowed to include only eligible sample members by subsectioning the frame, matching it against an external administrative data source, or collecting eligibility information directly from a sampled respondent or a proxy for that respondent.
When the sample frame is subsectioned or matched against an external administrative data source, this is referred to as passive screening because a respondent is not directly involved in the process. Passive screening uses existing data to determine ...
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