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Validation of the MASK-rhinitis visual analogue scale on smartphone screens to assess allergic rhinitis control

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Published:1st Dec 2017
Author: Caimmi D, Baiz N, Tanno LK, Demoly P, Arnavielhe S, Murray R et al.
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Ref.:Clin Exp Allergy. 2017 Dec;47(12):1526-1533.
DOI:10.1111/cea.13025.
Validation of the MASK-rhinitis visual analogue scale on smartphone screens to assess allergic rhinitis control


Background:
Visual Analogue Scale (VAS) is a validated tool to assess control in allergic rhinitis patients.

Objective: The aim of this study was to validate the use of VAS in the MASK-rhinitis (MACVIA-ARIA Sentinel NetworK for allergic rhinitis) app (Allergy Diary) on smartphones screens to evaluate allergic rhinitis symptoms and disease control.

Methods: Each user filled 4 different VAS measuring overall, nasal, ocular, and asthma symptoms at least once. Following COSMIN guidelines, we evaluated internal consistency, (Cronbach's alpha coefficient and test-retest), reliability (intraclass correlation coefficients), sensitivity, and acceptability of the MASK-Rhinitis VAS.

Results: Between 1 August 2015 and 31 July 2016, the app was used 14 612 times in 15 countries. A total of 1225 users used it more than once, during the evaluated period. The tool resulted to be statistically satisfactory, showing excellent internal consistency (Cronbach's test > 0.84, test-retest > 0.7), reliability (>0.9), and acceptability. In addition, the tool had a good sensitivity when users (n = 521) answered the VAS twice in less than 3 hours.

Conclusions and clinical relevance: The MASK-rhinitis VAS is a reliable and valid tool to assess allergic control on smartphone screens, at the population level.


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