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Asthma Control

Reference range number line format preferred by adults for display of asthma control status

, PhD, RN & , PhD, RN, AE-C, FAAN
Pages 638-644 | Received 21 Dec 2018, Accepted 28 Feb 2019, Published online: 03 Apr 2019
 

Abstract

Objective: Optimal asthma self-management requires an accurate understanding of one’s asthma control status. Tailored infographics are a promising way of conveying status information but little is known about which formats are effective at supporting comprehension while also being appealing to adults with asthma.

Methods: In this focus group study, we compared two formats to display Asthma Control Questionnaire (ACQ) scores: a stoplight graphic and a reference range number line (RRNL).

Results: Both formats supported comprehension but the RRNL was strongly preferred for its informativeness and for cueing participants to consider the self-management strategies they should undertake to improve their asthma control.

Conclusions: The RRNL format may have broad appeal and can be adapted to numerous clinical variables for low health literacy patient-facing displays, as in patient portals. However, until viewers are familiar with the format, use as a communication tool in the context of a clinical visit is recommended to forestall undue alarm over abnormal/out-of-range values.

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