Bringing the Missing Million Home: Correcting the 1991 Small Area Statistics for Undercount

Abstract

The 1991 UK Decennial Census missed about 1.2 million people. These missing individuals present a serious challenge to any census user interested in measuring intercensal change, particularly amongst the most marginalised groups in society who were prominent amongst the missing population. Recently, a web-based system for accessing census data from the 1971, 1981, and 1991 censuses was launched (www.census.ac.uk/cdu/lct). The ‘LCT’ package also provides access to a set of 1991 small area statistics (SAS) which have been corrected to compensate for the missing million. The authors explain the methods used for adjusting the SAS counts, provide examples of the differences between analysis with the adjusted and unadjusted data, and recommend the use of the new data set to all those interested in intercensal change.

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References

Brown

Diamond

Chambers

Buckner

Teague

, 1999, “A methodological strategy for a one-number census in the UK” Journal of the Royal Statistical Society Series A 162 247–267

CMU, 1993, “A user guide to the SARs”, Census Microdata Unit, University of Manchester, Manchester

Cole

, 1993, “The 1991 local base and small area statistics”, in The 1991 Census User's Guide Eds Dale

Marsh

, Office of Population Censuses and Surveys (HMSO, London) pp 201–247

Dorling

Martin

Mitchell

, 2001, “Linking censuses through time”, working paper, School of Geography, University of Leeds, Leeds

Heady

Smith

Avery

, 1994, “1991 Census Validation Survey: coverage report”, Social Survey Division, Office of Population Censuses and Surveys (HSMO, London)

Marsh

, 1993, “The sample of anonymised records”, in The 1991 Census User's Guide Eds Dale

Marsh

, Office of Population Censuses and Surveys (HMSO, London) pp 295–311

Marsh

Teague

, 1992, “Samples of anonymised records from the 1991 Census” Population Trends 69 17–26

Marsh

Skinner

Arber

Penhale

Openshaw

Hobcraft

Lievesley

Walford

, 1991, “The case for Samples of Anonymised Records from the 1991 Census” Journal of the Royal Statistical Society A 154 305–340

Martin

Dorling

Mitchell

, forthcoming, “Linking censuses through time: problems and solutions” Area

10.

ONS, GROS, NISRA, 1999, “2001 Census: a guide to the one number census”, Office for National Statistics, General Register Office, Scotland, Northern Ireland Statistics and Research Agency, http://www.statistics.gov.uk/census2001/pdfs/onc.pdf

11.

OPCS, 1995, “Census coverage”, Office of Population Censuses and Surveys Census Newsletter 32 2

12.

OPCS, GROS, 1992 1991 Census: Definitions: Great Britain Office of Population Censuses and Surveys, General Register Office, Scotland (HMSO, London)

13.

OPCS, GROS, 1994, “Undercoverage in Great Britain. Census user guide 58”, Office of Population Censuses and Surveys, London, and General Register Office, Scotland, Edinburgh

14.

Openshaw

, 1995, “A quick introduction to most of what you need to know about the 1991 Census”, in Census Users' Handbook Ed. Openshaw

GeoInformation International, Cambridge) pp 1–26

15.

Simpson

, 2002, “Dealing with census undercount”, in The Census Data System: Resources, Tools and Developments Eds Rees

Martin

Williamson

The Stationery Office, London) forthcoming

16.

Simpson

Dorling

, 1994, “Those missing millions: implications for social statistics of non-response to the 1991 census” Journal of Social Policy 23 543–567

17.

Simpson

Middleton

, 1999, “Undercount of migration in the UK 1991 Census and its impact on counterubanization and population projections” International Journal of Population Geography 5 387–405

18.

Simpson

Cossey

Diamond

, 1997, “1991 population estimates for areas smaller than districts” Population Trends 90 31–39