Welcome to openHDD

openHDD is an open-source solution to creating and sharing (health) data dictionaries, or minimum data sets. Unique in its kind is openHDD's complete flexibility with regard to taxonomies. Whatever data or structure you have defined, openHDD can help you document it.


Getting Started

  1. Watch the Overview Video to see openHDD in action.
  2. Use the Glossary to familiarize yourself with openHDD's terminology.
  3. Follow the Links to see some national HDDs at work, and to read up on background material.
  4. Take the Guided Tour to see the various screens in a typical order. The screens have been annotated to explain their use. Use the [Previous] and [Next] buttons at the bottom of the page to navigate.
  5. Click Dictionaries to see the dictionaries currently defined in openHDD, and use Comparisons and/or Metrics to have a look at the size, structure, and content of those dictionaries. Export a dictionary to PDF if you prefer reading "paper" format, or use the Search function to look up particular items.

Creating Your First Dictionary

  1. Log in, review the [Properties] screen, and adjust the settings as required. If needed, define extra types and/or attributes, or ask your openHDD administrator to do this.
  2. Create a few sections as placeholders, and then start entering some definitions for different types of items.
  3. Review the structure and contents to see if all relevant aspects are captured. Adjust the [Properties] settings if required.
  4. Make sure to reach agreement with your stakeholders on the structure of the dictionaries / items before you start entering data in any large volumes.
  5. Complete the section that has the highest priority in terms of data exchange first. You can always add more detail later, but it is highly recommended that you agree upon a structure/format first. Much rework will be needed if you change some property from being not-required to required, for example. In such cases, use the option [Tools—Data Quality—Find Missing Requireds].

How it Works