Lower Healthcare Access and Its Association With Individual Factors and Health-Related Quality of Life in Adults With Rare Diseases in Switzerland.

Objectives: This study aims to determine clusters of access to healthcare among adults with rare diseases in Switzerland, identify associated individual characteristics of access, and impact on health-related quality of life (HRQoL).

Methods: Swiss adults (N = 341) diagnosed with a rare disease completed an online survey including the Perception of Access to Healthcare Questionnaire (PAHQ) and Short Form Health Survey (SF-12). We employed partition around medoids algorithm to identify patient clusters based on the PAHQ. Various sociodemographic/disease-related factors and HRQoL were assessed.

Results: We identified two patient clusters: higher (n = 227) and lower access (n = 114). Significantly associated with lower access were an unstable disease course (p < 0.05), increased number of misdiagnoses (p < 0.05), and diseases affecting the nervous system (p < 0.01). Membership in the lower access cluster was significantly associated with worse HRQoL (p < 0.05).

Conclusion: Findings highlight the need for comprehensive assessment of healthcare access in adults with rare diseases and identifies potential targets for tailored interventions.