"It attracts your eyes and brain": Refining visualizations for shared decision-making with heart failure patients.

BACKGROUND

N-of-1 trials have emerged as a personalized approach to patient-centered care, where patients can compare evidence-based treatments using their own data. However, little is known about optimal methods to present individual-level data from medication-related N-of-1 trials to patients to promote decision-making.

OBJECTIVES

We conducted qualitative interviews with patients with heart failure with preserved ejection fraction (HFpEF) undergoing N-of-1 trials to iterate, refine, and optimize a patient-facing data visualization tool for displaying results of N-of-1 medication trials. The goal of optimizing this tool was to promote patients' understanding of their individual health information, and to ultimately facilitate shared decision-making about continuing or discontinuing their medication.

METHODS

We conducted 32 semi-structured qualitative interviews with 9 participants over the course of their participation in N-of-1 trials. The N-of-1 trials were conducted to facilitate a comparison of continuing versus discontinuing a beta-blocker. Interviews were conducted in-person or over the phone after each treatment period to evaluate participant perspectives on a data visualization tool prototype. Data were coded using directed content analysis by two independent reviewers and included a third reviewer to reach consensus when needed. Major themes were extracted and iteratively incorporated into the patient-facing data visualization tool.

RESULTS

Nine participants provided feedback on how their data was displayed in the visualization tool. After qualitative analysis, three major themes emerged that informed our final interface. Participants preferred: 1) clearly stated individual symptom scores, 2) a reference image with labels to guide their interpretation of symptom information, and 3) qualitative language over numbers alone conveying the meaning of changes in their scores (e.g., better, worse).

CONCLUSIONS

Feedback informed the design of a patient-facing data visualization tool for medication-related N-of-1 trials. Future work should include usability and comprehension testing of this interface on a larger scale.

Informations de copyright

Thieme. All rights reserved.

Déclaration de conflit d'intérêts

Dr. Goyal has received consulting fees from Sensorum Health; and has received personal fees for medicolegal consulting related to heart failure.