Do visual aids influenced patients' risk perceptions for rare and very rare risks?

Area of Science:

• Health communication
• Risk perception research
• Patient education

Background:

• Effective risk communication is crucial for informed medical decisions.
• Understanding how patients perceive rare and very rare risks is challenging.
• Visual aids are increasingly used to simplify complex health information.

Purpose of the Study:

• To investigate the influence of visual aids on patient risk perception for rare and very rare risks.
• To assess how educational attainment modifies the effect of visual aids on risk perception.
• To determine the impact of visual aids on medication adherence.

Main Methods:

• Randomized controlled trial with factorial design.
• Participants exposed to infection risk scenarios (2% or 0.2%) with varying visual aids (numbers only, graphic, illustrations, or combined).
• Risk perception and medication initiation likelihood assessed, stratified by education level.

Main Results:

• Visual aids did not alter risk perceptions in highly educated individuals.
• For lower-educated participants, combined visual aids reduced risk perception and increased medication initiation likelihood in the 2% risk scenario, but not the 0.2% scenario.
• The effect of visual aids was more pronounced for rare (2%) versus very rare (0.2%) risks.

Conclusions:

• Combined graphic representations and conceptual illustrations may enhance understanding of rare risks for patients with lower educational backgrounds.
• Visual aids' effectiveness in risk communication is dependent on risk probability and patient education level.
• Clinicians should consider tailored visual aid strategies based on patient education and risk rarity.