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		Improved Methods for Population Statistics Revisions in 2007 Product   ONS is undertaking a substantial and long term programme of work to improve the population statistics it produces. The improved methods being implemented in 2007 relate to usually resident populations of each area and the international migration component of these figures. The improvements address: the distribution of international in-migrants to regional and local authority level; the distribution of international out-migrants to local authority level; and the basis for making assumptions about the proportion of people who will not realise their original intentions at the time of travel, in terms of their expected length of stay in the destination country. Methodological information for each of these improvements is available on this page, alongside: details of new geographical unit... View more information about this product.   Office for National Statistics (ONS), Ad hoc, Online edition, Contact: +44 (0)1329 444691 13 September: Updated Frequently Asked Questions (71Kb - Pdf) 13 September: Actual Impacts of Improved Methods for Population Statistics in 2007 (530Kb - Xls) 13 September: ONS Centre for Demography Publication Timetable for 2007 (13Kb - Pdf) 13 September: Propensity To Migrate Models Used in Distributing Out-migration Estimates to Local Authority Level (23Kb - Pdf) 24 July: Introduction and Overview (27Kb - Pdf) 24 July: Frequently Asked Questions (71Kb - Pdf) 24 July: The Use of the Labour Force Survey to Improve Estimates of International In-migration - Coverage and Quality (23Kb - Pdf) 24 July: The Use of Calibration in Estimating International In-migration to UK Countries and the Regions of England (42Kb - Pdf) 24 July: Impact of the New Migration Geography on the Estimation of Local Distributions of International Migrants within England and Wales (193Kb - Pdf) 24 July: The Construction of Intermediate Geographies in London (201Kb - Pdf) 24 July: The Use of International Migrant Distributions from the 2001 Census in Local Population Estimates (34Kb - Pdf) 24 July: The Use of a Propensity to Migrate Model to Improve Estimates of International Out-migration from Local Authorities in England and Wales (43Kb - Pdf) 24 July: Improved Local Age Distributions of International In-migrants (108Kb - Pdf) 24 July: Improved Local Age Distributions of International Out-migrants (143Kb - Pdf) 5 July: Additional Information (80Kb - Pdf) 24 April: Introduction and Overview (24Kb - Pdf) 24 April: Geographical Distribution of Estimates of In-migration (67Kb - Pdf) 24 April: Geographical Distribution of Estimates of Out-migration (65Kb - Pdf) 24 April: Geographic Areas Used in Estimation (911Kb - Pdf) 24 April: Estimation of People Whose Intentions Change With Respect to Their Length of Stay (76Kb - Pdf) 24 April: Indicative Impacts of Improved Methods for Population Statistics in 2007 (259Kb - Xls) 24 April: ONS Centre For Demography - Planned Publication Dates (12Kb - Pdf)   Accessibility|FAQs and Contact Us|Terms & Conditions|Privacy Statement Link to us|Crown Copyright applies unless otherwise stated