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Conor's Caregraf Blog


If it’s in VistA, the FileMan Query Language (FMQL) can get it.

The VA’s 45 billion triples

For us, medical expression boils down to triples, simple subject-predicate-object statements …

    The problem is Hypertension
                   of-patient "Joe Smith"
                   recorded-on 2011-10-21
                   diagnosed-by "Dr Fred Jones"

… one triple after another, capturing a patient’s health, and so a key metric for us is how many triples does a typical patient get? Without a figure, we can’t know how big… Read More »

VistA Goodness

VistA, the EHR of the Veteran’s Administration (VA), is available to all-and-sundry, thanks to the freedom of information act (FOIA). Anyone can download, what is arguably, the most widely used, enterprise-grade, EHR in America, and use it for free. Obviously any hospital considering a new EHR should give it a once-over.

The VA presents VistA as a set of packages… Read More »

VA VistA, trivial to export Patient Records

Most enterprise quality EHRs sport kill-you-if-I-tell-you, data access interfaces. And that makes commercial sense: make data easy and pleasing to enter, but make it hard, or at least costly, to get at later. There’s one conspicuous exception: VistA, the Veteran Administration’s home grown and freely-available EHR.

In VistA, as long as you have permission to use its query-anything interface,… Read More »

Conor's Blog

About this Blog

It's a ramble around patient-data representation and exchange, following the mantra to work through examples, don't just talk principles.. Here are the topics ...

About Conor

Conor Dowling is the CTO of Caregraf.

What strikes me is the match: on one side is Linked-Data, the most powerful way to exchange diverse data, and, waiting on the other, too-long unattended, is the volume and diversity of health-data. All they need is a push.