An independent review team, lead by Professor Ian Plewis from the University of Manchester, has published a review of methods for coverage assessment, coverage adjustment and quality assurance of the 2011 Census population estimates for England and Wales. The review, and all supporting documentation are available to download.
ONS responded to the recommendations in the following working papers, available to download:
Adjusting for Within Household Dependence – testing the assumption that within household dependence would be minimal due to the CCS design
Estimating and Correcting for Over-count in the 2011 Census – presenting a small simulation study to demonstrate the chosen method
Estimation and Adjustment for Communal Establishments in the 2011 Census – outlining proposed methods for measuring coverage in large and small communal establishments
Coverage Adjustment Methodology for the 2011 Census – describing building on the 2001 imputation system
Age Sex Groups for use in Estimation – using age groups with homogeneous census coverage probabilities to reduce heterogeneity bias
The Use of Fixed Effects When Estimating for Individual Local Authorities – describing the need for and when to use a fixed effects estimator
Variance Estimation – outlining methods for estimating variance and deriving confidence intervals for the 2011 Census
Related downloads
- ONS Response to recommendations from the Independent Review (74.7 kB pdf)
- Independent Review Final Report (355.7 kB pdf)
- Independent Review - ONS Response to Supplementary Report (68.9 kB pdf)
- Independent Review - Supplementary Report (182.7 kB pdf)
- Reference Papers for Independent Review (31.3 kB pdf)
- Independent Review Terms of Reference (33.7 kB pdf)
- Adjusting for within household dependence (26.7 kB pdf)
- Estimating and correcting for over-count in the 2011 Census (115.2 kB pdf)
- Estimation and adjustment for Communal Establishments in the 2011 Census (54.8 kB pdf)
- Coverage Adjustment methodology for the 2011 Census (75.9 kB pdf)
- Age-sex groups for use in estimation (22.4 kB pdf)
- The use of fixed effects when estimating for individual Local Authorities (11.4 kB pdf)
- Variance Estimation in the 2011 Census (142.9 kB pdf)