Using family-centered communication to optimize patient-provider-companion encounters about changing to biosimilars:...

To explore whether family-centered communication impacts decisions and optimizes patient-companion-provider consultations.

A parallel, two-arm randomized controlled trial was conducted with 108 participants acting as patients with inflammatory arthritis or companions. Pairs attended a mock consultation where a physician explained the change from a bio-originator to a biosimilar using family-centered or patient-only communication. Participants reported their willingness to transition, risk perceptions, understanding and social support, and completed various scales including the Patient Perception Scale. Interviews helped understand perceptions towards the consultation.

Family-centered communication did not impact willingness to change or cognitive risk perceptions compared to patient-only communication. However, it improved emotional risk perceptions (p = 0.047, Cohen's d=.55) and satisfaction with communication (p = 0.015, Cohen's d=.71). Feeling the explanation was reassuring was associated with less worry (p = 0.004). Receiving emotional support (p = 0.014) and companions asking fewer questions (p = 0.046) were associated with higher recall. The intervention improved companion involvement (p < 0.001, Cohen's d= 1.23) and support (p = 0.002, Cohen's d=.86). Interviews showed that encouraging questions, inclusive body language, and acknowledging companions facilitated involvement.

Family-centered communication augments patient-companion-provider encounters but does not influence willingness to change treatment.

Practitioners can use family-centered communication when discussing biosimilars but should provide reassurance, encourage emotional support, and summarize key points to improve understanding.