Quality of the Census Data

Background information and reports about the quality of 2001 Census data including a range of measures of data quality.

• Response Rates

  Household and person response rates

• Confidence Intervals

  95 per cent confidence intervals for the 2001 Census result

• Imputation rates

  Imputation rates for key variables for local authorities and wards

• Quality Indicators

  Quality indicators for health areas and postcode sectors

• Local Authority data quality

  Quality indicators, imputation rates and One Number Census quality assurance information for each local authority in England and Wales

• Data quality notes and reports

  Details of other issues that affected the quality of the 2001 Census data

• One Number Census Quality Assurance

  Results of the One Number Census Quality Assurance Process