About the T1D Index - global type 1 diabetes estimates, partners and methods

T1D Numbers

About the T1D Index

The T1D Index is a simulation model of type 1 diabetes in every country in the world. It answers questions that surveillance data alone cannot: how many people are living with T1D, how many were never diagnosed, and how many years of life are lost to the condition where care is hardest to reach.

Estimates are peer-reviewed and published openly, and every figure on this site traces back to a paper you can read. This site is the public interface to those estimates — explore them by country, region and age, ask questions in plain language, or download the underlying data.

Partners & Collaborators

The Index is built and used in partnership with organisations working across diabetes research, care and advocacy worldwide.

Breakthrough T1D

Breakthrough T1D

Leading global funder of type 1 diabetes research and advocacy.

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International Diabetes Federation

International Diabetes Federation

The global voice of the diabetes community, representing national associations in more than 160 countries. Publisher of the IDF Diabetes Atlas.

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ISPAD

International Society for Pediatric and Adolescent Diabetes

Global expertise in paediatric and adolescent diabetes care and research.

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Life for a Child

Life for a Child

Humanitarian programme supporting diabetes care for young people in under-resourced countries.

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Our Data in Use

Organisations across the diabetes community draw on Index estimates in their own research communications and advocacy.

Diabetes Research Connection using T1D Index estimates

Diabetes Research Connection

Nonprofit funding early-career diabetes research and connecting researchers with resources.

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T1D Fund using T1D Index estimates

T1D Fund

Venture philanthropy investing in companies developing cures and therapies for type 1 diabetes.

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Why Organisations Use Our Data

Peer-reviewed methods

Every release is documented in a peer-reviewed publication, with the full model appendix available to read alongside the data.

Every country covered

Estimates are produced for all countries, including those without registries, so global comparisons are not limited to places that already collect the data.

Versioned releases

Each version stays downloadable after it is superseded, so published analyses remain reproducible and changes between releases can be traced.

Contact & Corrections

Found a bug, or data that looks wrong?

Corrections from people who know their own country's data are one of the main ways the Index improves. Tell us what you saw and where, and we will look into it.

Email hello@t1dindex.org

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