The CHI-RON Study: Using PCORnet® and Patient Engagement Strategies to Improve Diversity Among Research Participants in the Congenital Heart Initiative

Scritto il 08/01/2026
da Anitha S John

Med Care. 2026 Feb 1;64(2S Suppl 3):S196-S204. doi: 10.1097/MLR.0000000000002222. Epub 2026 Jan 8.

ABSTRACT

BACKGROUND: The Congenital Heart Initiative-Redefining Outcomes and Navigation to Adult-Centered Care (CHI-RON) study is a unique collaboration between the PCORnet and Congenital Heart Initiative (CHI), the first patient powered registry for adult congenital heart disease (ACHD) patients. The CHI-RON study examines the effects of gaps in recommended care in ACHD.

OBJECTIVE: Recruitment of racially diverse, younger, out-of-care, and male participants has been challenging in ACHD studies. Our goal was to design patient engagement and recruitment strategies to improve representation.

RESEARCH DESIGN: Launched in December 2020, patients from any location can self-enroll in the CHI registry, while the CHI-RON study (5/2022 - 10/2023) recruited ACHD patients at 12 sites participating in PCORnet. CHI-RON Recruitment methodology included a patient partner engagement toolkit and a recruitment algorithm using the PCORnet® Common Data Model designed specifically to improve diversity and reduce self-enrollment biases in comparison to the CHI registry.

SUBJECTS: ACHD patients, age 18 years or older, with the ability to complete PROs independently.

MEASURES: Demographic/Recruitment Statistics for study participants and Patient Engagement in Research Scale (PEIRS-22) for the study team partners.

RESULTS: As of October 2023, a total of 2652 participants were recruited through CHI-RON recruitment methodology while 1326 were self-enrolled in the CHI. CHI-RON recruitment methodologies have increased representation when compared with self-enrolled CHI participants in terms of ethnicity (10.9% vs. 7.4% Hispanic, P<0.001), race (5.4% vs. 2.6%, Black/African American, P<0.001), sex (41% vs. 28% male, P<0.001), younger age (35.5 +/-12.8 y vs. 43.5±14.5 y, P<0.001), and education (33.4% vs. 24% high school equivalent or less, P<0.001).Most study team patient partners (n=12, 86%) reported a very to extremely high degree of engagement (PEIRS-22 average score 101.6), especially in the subdomains of contributions, support, feeling valued, and benefits.

CONCLUSIONS: Patient engagement and novel recruitment strategies are critical to improving the inclusion of under-represented populations in clinical research and ensuring alignment with the needs of ACHD patients.

PMID:41504747 | DOI:10.1097/MLR.0000000000002222