• the use of the sampling rate chosen for undeliverable-as-addressed vacant housing units;
  • the obligation to use nonresponse follow-up to directly enumerate at least 90 percent of households in combination with mail response;
  • the restriction to use at least a 1-in-3 sampling rate in areas of high mail response;
  • the use of hot deck imputation for nonresponse follow-up and vacant households;
  • the use of computer-assisted personal interviewing for integrated coverage measurement;
  • the treatment of missing data in integrated coverage measurement;
  • issues involving use of dual-system estimation;
  • the decision not to combine demographic analysis with integrated coverage measurement;
  • the prohibition against using integrated coverage measurement estimates that borrow information across states;
  • the use of ''raking" rather than more complex modeling for small-area estimation from dual-system estimation; and
  • the creation of a transparent household file.

A Full Master Address File Canvass

A complete master address file is crucial to a 2000 census that produces reliable small-area tabulations. In addition, the MAF needs to be referenced to the correct geographic location in the computerized census feature maps, referred to as the Topologically Integrated Geographic Encoding and Referencing (TIGER) system. The completeness and accuracy of the geographically referenced address list (MAF-TIGER) is important to provide adequate support for key data collection operations planned for the 2000 census:

  • mailout and postal delivery of the census questionnaires for mailback return;
  • census delivery of questionnaires for mailback return in rural areas;
  • unduplication of multiple questionnaire responses from the same household, which results from multiple response options and mailout of replacement questionnaires; and
  • enumerator field follow-up for nonresponse, including accurate sampling to achieve 90 percent direct enumeration in each census tract.

To assure a high-quality MAF-TIGER, the Census Bureau has undertaken initiatives throughout the 1990s to keep these files up to date. At the national level, the Bureau has partnered with the U.S. Postal Service



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