Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 May 20;10(5):e32158. doi: 10.2196/32158

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

©Haitham Abaza, Dennis Kadioglu, Simona Martin, Andri Papadopoulou, Bruna dos Santos Vieira, Franz Schaefer, Holger Storf. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 20.05.2022.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Medical Informatics, is properly cited. The complete bibliographic information, a link to the original publication on https://medinform.jmir.org/, as well as this copyright and license information must be included.

PMC Copyright notice

Classification of registries and their data elements. CDE: common data element; DCDE: domain-specific common data element; RDE: registry-specific data element.