Where can I find more information about the PPI's updated construction methodology?

In November 2017, the PPI technical team updated the methodology behind the development of the PPI. To learn more, read our blog post and FAQs page.

An important note is that existing PPIs remain valid and will be continue to be supported by the PPI Help Desk. However, the new methodology will be used to create new PPIs, and update existing PPIs from this point on. You can see the PPIs that are currently slated for development on our website here.