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CCM – Census Coverage Measurement

2010 Census Coverage Measurement Survey Update New York State Data Center Affiliate Meeting May 20, 2010 Thomas Mule US Census Bureau. CCM – Census Coverage Measurement. Survey provides estimates of coverage error for people in housing units and for housing units:

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CCM – Census Coverage Measurement

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  1. 2010 Census Coverage Measurement Survey UpdateNew York State Data CenterAffiliate MeetingMay 20, 2010Thomas MuleUS Census Bureau

  2. CCM – Census Coverage Measurement • Survey provides estimates of coverage error for people in housing units and for housing units: • Excludes group quarters and remote Alaska • Includes Puerto Rico • No intent to adjust the census

  3. Net Error • Uses dual-system estimation, a sample capture-recapture technique • Used in 1980, 1990, and 2000 • Provides estimates of net undercount and overcount • Key demographic groups • Specific geographic areas • Requires independence from census

  4. Components of Census Coverage • New objective for 2010 • Provides estimates of: • Correct enumerations – those included correctly by the census • Erroneous enumerations – those included incorrectly by the census • Imputations • Omissions – those missed by the census • Key demographic groups and by census operations

  5. 2000 A.C.E. Measurement Error • 2000 coverage measurement program failed to detect erroneous enumerations • Many were census duplicates

  6. 2010 CCM Nonsampling Error Reduction Initiatives and CCM Recall Bias Study • Higher field work reinterview rates • Higher clerical matching review rates and analyst spot checks • Extending Person Interview Reinterview (RI) for one week to allow for the completion of RI sampling • Paired interviewers for Initial Housing Unit Followup 6

  7. 2010 CCM Nonsampling Error Reduction Initiatives and CCM Recall Bias Study 5 Adding training modules to interviewer training 6 Smaller field employee-to-supervisor ratios 7 Conduct personal visit follow up for nationwide possible duplicates in the Person Followup operation CCM Recall Bias Testwill start in May 2010 7

  8. CCM Sample Size • Reduced from 300,000 to 170,000 housing units • American Indian Reservation and Hawaii sample remain same • 1,000 target minimum state housing unit sample size

  9. Current Plans for Estimation Domains for 2010 CCM • Estimation domains have not been finalized so products shown here are current plans • Break into 3 Major Groupings: • Demographic/housing unit characteristic groups • Geographic areas • Census operation results

  10. Examples of Estimation Domains for Demographic Groupings for People in Housing Units

  11. Examples of Estimation Domains for Geographic Areas for People in Housing Units

  12. Substate Geographic Level for People in Housing Units:Net Error • Proposed level of release • counties and places with 2010 count >= 100,000 • balance of state for remaining

  13. Substate Geographic Levelfor People in Housing Units:Components of Census Coverage • Proposed level of release • counties and places with 2010 count >= 500,000 • balance of state for remaining

  14. Examples of Estimation Domains for Census Operations for People in Housing Units

  15. What about those people who should have been enumerated somewhere else? • A table to show people who should been enumerated outside our block cluster search area. • Same county • Different county in the same state • Different state

  16. Examples of Estimation Domains for HU Characteristics for Housing Units

  17. Examples of Estimation Domains for Geographic Areas for Housing Units

  18. Substate Geographic Levelfor Housing Units:Net Error and Components Same Criteria as People in HUs • Net Error: counties and places with 2010 count >= 100,000 • Components: counties and places with 2010 count >= 500,000 • Balance of State for remaining

  19. Examples of Estimation Domains for Census Operations for Housing Units

  20. Housing units that were geocoded incorrectly • A table to show housing unit geocoding results in relation to block cluster search area • Geocoded to block cluster • Geocoded one block outside of the cluster • Geocoded beyond one block outside of the cluster

  21. Thanks! vincent.t.mule.jr@census.gov

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