The material here follows in a direct line of descent from Manual X and subsequent works (for example, the 2002 UN Manual of Adult Mortality Estimation). The principal aspect of this website is a series of (mostly) static webpages describing and documenting the tools and methods of demographic estimation from limited, deficient and defective data. The material is organised thematically first, and then by the kinds of data that may be available. Where appropriate, downloadable spreadsheets are provided that allow users to apply the methods to their own data.
Forums are available to discuss and debate methods and results, and FAQs describe how to use the site in more detail. Links to both, as well as forms to contact us, are at the top right hand side of the screen. While all material on the site is freely available and accessible to anyone, only registered users are able to subscribe to changes on individual pages, or post comments on the fora on or pages. Registration is quick and automated. To register, click on the link at the top right.
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Following the preparation of a printed volume of the material on this website launched at the International Population Conference in Busan, Korea at the end of August 2013, the material presented here will undergo extensive revision in the next few weeks. At present the most up-to-date version of the material is contained in the PDF of the book, available HERE or by clicking on the image above. The equivalent webpages of the book will be updated in the coming weeks. Please visit the "List of outstanding updates page" for our progress in updating the site.