Archive for December 15, 2021

A Short History of CDISC and SAS Transport Files

Background When development of the SDTM and SDTMIG started, SAS was in almost universal use in the pharmaceutical industry and at FDA. "The SAS® Version…

Why Not Just Use SNOMED?

December 15, 2021

SNOMED (short for SNOMED Clinical Terms or SNOMED CT) is a set of medical terms used widely in clinical practice. Some have asked why CDISC…

Sex and Gender

December 15, 2021

"Sex" and "gender" are similar but different concepts whose definitions and meanings can be confusing (see, for example, the article Sex and gender: What is…

Use of HL7 FHIR as eSource to Pre-populate CDASH Case Report Forms using a CDISC ODM API

Sam Hume, CDISC, State College, PA, USA Jeff Abolafia, Rho, Chapel Hill, NC, USA Geoff Low, Medidata Solutions, London, UK   ABSTRACT Use of Fast…

Use of FHIR in Clinical Research: From Electronic Medical Records to Analysis

PHUSE US Connect 2019 Priya Gopal, TESARO, Waltham, MA, USA Jeff Abolafia, Rho, Chapel Hill, NC, USA Sam Hume, CDISC, State College, PA, USA  …

Standardized Lab Units

December 15, 2021

The International System of Units (SI), commonly known as the metric system, is the international standard for measurement. According to the National Institute of Science…

Changing Event Severity

December 15, 2021

In the diagrams below, the red line represents a graph of severity over time for a hypothetical event. For most adverse events, severity cannot be…

Domains are Topic-based, Except When They're Based on Structure

For an implementer trying to decide where data belong in SDTM-based datasets, it's pretty clear when data belongs in a trial design dataset, a relationship…

Study Subject vs. Experimental Unit

The BRIDG model makes a distinction between a study subject and an experimental unit.  In most studies for which SDTM is implemented, these terms refer…

Controlled Terminology: FAQs

December 15, 2021

1. Who makes Controlled Terminology? You do! Controlled Terminology is developed from user requests, as well as requests from the CDISC Foundational and Therapeutic Area…