The Inhaler Technique Questionnaire (InTeQ) : Development and Validation of a Brief Patient-Reported Measure
Lizano-Barrantes, Catalina (Universidad de Costa Rica. Department of Pharmaceutical Care and Clinical Pharmacy)
Garin, Olatz (Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública)
Dima, Alexandra Lelia (Research on Healthcare Performance (RESHAPE))
Van Ganse, Eric (PELyon, Pharmacoepidemiology)
de Bruin, Marijn (Radboud Institute for Health Sciences. Scientific Center for Quality of Healthcare (IQ Healthcare))
Belhassen, Manon (PELyon, Pharmacoepidemiology)
Mayoral, K.. (Universitat Autònoma de Barcelona. Departament de Pediatria, Obstetrícia i Ginecologia i Medicina Preventiva i Salut Pública)
Pont, Àngels (Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública)
Ferrer Forés, Maria Montserrat (Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública)

Date:	2022
Abstract:	There is a need for instruments designed for patients with asthma to self-report their performance of inhaling steps. We aimed to develop an accessible and easy-to-use patient-reported tool for inhaler technique assessment, which could also serve as a training and monitoring resource for any type of inhaler device, and to evaluate its feasibility, validity, and reliability in adults with asthma. The development was based on literature review and pilot testing with clinicians and patients. The Inhaler Technique Questionnaire (InTeQ) asks about the frequency of performing five steps when using inhalers (on a five-point Likert scale). We analyzed data from adults with persistent asthma (n = 361). We examined the measurement model using Mokken scaling analysis, construct validity by assessing hypotheses on expected discrimination among known groups, and reliability based on internal consistency and reproducibility. Means of the InTeQ items were in the range of 0. 23-1. 61, and coefficients of homogeneity were above the cutoff point, demonstrating the unidimensionality of the scale. Known groups' global score differences were statistically significant between patients reporting having "Discussed in detail" or having "Not discussed/Only in general" the inhaler technique with their healthcare providers (p = 0. 023). The Cronbach's alpha coefficient was 0. 716, and the intraclass correlation coefficient was 0. 775. The InTeQ is a feasible, valid, and reliable instrument for self-reporting inhaler technique on any type of device.
Grants:	European Commission 282593 Instituto de Salud Carlos III FI16/00071 European Commission. Horizon 2020 706028 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017-SGR-452
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Asthma ; Inhalation technique ; Measurement instruments ; Patient-reported outcomes
Published in:	International journal of environmental research and public health, Vol. 19 núm 5 (february 2022) , ISSN 1660-4601

DOI: 10.3390/ijerph19052591
PMID: 35270283

15 p, 961.3 KB

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