The ADAPTABLE pragmatic trial relies on patients to report key information at baseline and throughout follow-up. To capture these data, ADAPTABLE investigators developed a LOINC (Logical Observation Identifiers Names and Codes) patient-reported item set, which is now publicly available.

The development of the item set is part of the ADAPTABLE Supplement, an initiative funded by the Office of the Assistant Secretary for Planning and Evaluation to develop best practices for capturing patient-reported outcome data and optimal analytic approaches for using the data in a pragmatic clinical trial. Additional reference material can be found in the ADAPTABLE Supplement Roundtable Meeting summary, in a report describing the results of a literature review of data standards and metadata standards for variables of interest, and on GitHub. The project is expected to inform future efforts to integrate patient-reported data in the electronic health record and provide opportunities to streamline data for use in pragmatic trials. Information from the project is being added to the Living Textbook as it accumulates; learn more in the chapters on Using Electronic Health Record Data and Choosing and Specifying End Points and Outcomes.

ADAPTABLE (Aspirin Dosing: A Patient-Centric Trial Assessing Benefits and Long-Term Effectiveness) aims to identify the optimal dose of aspirin therapy for secondary prevention in atherosclerotic cardiovascular disease and is the first major randomized comparative effectiveness trial to be conducted by the National Patient-Centered Clinical Research Network (PCORnet).