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We would dearly like to say, "Yes, it is". Unfortunately, in the world of HTML coding not everything is that simple. The formulae on the site are marked up using MathML, the standard language for doing so. Unfortunately, Internet Explorer (from Microsoft) has chosen to not play ball entirely fairly with industry standards of coding. As a result, there are some fundamental, problems with the rendering of the site on IE (all versions).

Instead, we recommend (in order):

Mozilla Firefox or

Google Chrome

and have not yet encountered any problems browsing the site with the new version of Microsoft Edge.

Yes! Simply click on the image and it will open in a temporary screen.

Clicking on the outward-arrows button at the bottom right of the image opens an even crisper version.

Press <esc> to close the image.

Yes! Click on any formula to see a more detailed rendering.

Depending on your browser or browser settings, you may need to

  1. right-click on a formula
  2. Select "Format" --> "MathML"
  3. Select "Settings" --> "Zoom trigger" --> "Click"
  4. Select "Settings" --> "Zoom factor" --> "200%"
  5. Select "Settings" --> "Math Renderer--> "MathML"

This should need to be done only once.

At the top of each article, just underneath the heading, the name of the principal author of that section appears. If you click on that name, you will be able to send a personal email to him/her directly from the website.

If you want to debate the rectitude or implementation of the methods described, you may post a comment on any page - although you will have to be logged in with a validated email address.

If none of that offers satisfaction, the Contact link at the top right hand corner of your screen will allow you to send a personal email to the project's principal investigator.

A consortium of demographers at the University of Cape Town's Centre for Actuarial Research, the London School of Hygiene and Tropical Medicine's Department of Population Studies, and independent consultants based at Harvard University prepared the bid that was awarded the tender by the IUSSP and UNFPA in early 2010. The same team has overseen the preparation and production of the material on this website. The project team are

Centre for Actuarial Research (CARe), University of Cape Town

A/Prof Tom Moultrie (co-Principal Investigator)

Prof Rob Dorrington (co-Principal Investigator)

Department of Population Studies, London School of Hygiene & Tropical Medicine

Prof Ian Timæus

Prof Basia Zaba

Harvard-based consultants

Prof Ken Hill

Prof Allan Hill


Collectively, the team has well over 100 year's experience in working with demographic data from countries across the developing world.

The copyright on all material on this website is held by the IUSSP, under a Creative Commons Attribution-NonCommercial Share-Alike licence. More information on what this means is available from the Creative Commons website but, in summary, the license means that while users are free to modify and adapt the material, it must always be attributed to the copyright holder (the IUSSP), that the material may not be used (that is, reissued or reprinted) for commercial gain, and that any modification and subsequent publication must be made available on the same license terms as this licence.

The intention is for the material to be used as widely and creatively as possible. Should you wish to have some or all of these licence conditions waived, please write to the IUSSP and the principal investigator of this project, setting out the request and the reasons for it.

The site is run on a dedicated subdomain of the IUSSP's main website, using Drupal. All design codings, modifications, tweaks etc. were implemented by the project team's developer, Charles Oertel, based in Cape Town, South Africa.

The consortium responsible for the material has reserved the right to be identified as the authors of all the material. All pages on the website containing technical material have a "suggested citation" link. Clicking on this opens a pop-up with the suggested citation of the page, complete with URL and access date. The contents of the pop-up can be highlighted with a mouse and copied and pasted. Please use it!

If you need to refer to the entire body of work, please cite the website as

Moultrie TA, RE Dorrington, AG Hill, K Hill, IM Timæus and B Zaba (eds). 2013. Tools for Demographic Estimation. Paris: International Union for the Scientific Study of Population.