Patient-reported outcome and experience domains for diagnostic excellence: a scoping review to inform future measure development.

Purpose: "Diagnostic excellence," as a relatively new construct centered on the diagnostic process and its health-related outcomes, can be refined by patient reporting and its measurement. We aimed to explore the scope of patient-reported outcome (PRO) and patient-reported experience (PRE) domains that are diagnostically relevant, regardless of the future diagnosed condition, and to review the state of measurement of these patient-reported domains.

Methods: We conducted an exploratory analysis to identify these domains by employing a scoping review supplemented with internal expert consultations, 24-member international expert convening, additional environmental scans, and the validation of the domains' diagnostic relevance via mapping these onto patient diagnostic journeys. We created a narrative bibliography of the domains illustrating them with existing measurement examples.

Results: We identified 41 diagnostically relevant PRO and PRE domains. We classified 10 domains as PRO, 28 as PRE, and three as mixed PRO/PRE. Among these domains, 19 were captured in existing instruments, and 20 were captured only in qualitative studies. Two domains were conceptualized during this exploratory analysis with no examples identified of capturing these domains. For 27 domains, patients and care partners report on a specific encounter; for 14 domains, reporting relates to an entire diagnostic journey over time, which presents particular measurement opportunities and challenges.

Conclusion: The multitude of PRO and PRE domains, if measured rigorously, would allow the diagnostic excellence construct to evolve further and in a manner that is patient-centered, prospectively focused, and concentrates on effectiveness and efficiency of diagnostic care on patients' well-being.