About ABCD-ROR

What this is

ABCD-ROR (“return of results”) lets a participant view their own study measurements — heart rate, blood pressure, and blood lead — and see how each compares to the wider cohort.

The data here is synthetic

Every value on this site is randomly generated for demonstration. No real participant data is published.

Zero-knowledge by design

This is a static website with no backend server. Your access code never leaves your device. The site stores only encrypted files and anonymous aggregate statistics. When you enter your code, your browser alone derives the keys (using a deliberately slow, memory-hard function) and decrypts your single record locally. The server never sees your code, your keys, or your values.

Your code is your only key

Because decryption happens in your browser from your code alone, keep your access link private. If you lose it, the study team can re-issue one — the code cannot be recovered from this site.

Contact

Questions about your results or this site? Contact the ABCD study team through the channel provided with your access link.