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Development and validation of an asthma self-knowledge questionnaire

2025-10Artigo científico Acesso aberto
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dc.contributor.authorSantos, Adalberto Fernandes dos
dc.contributor.authorCosta, Renata
dc.contributor.authorPereira, Henrique
dc.contributor.authorPedro, Ana Rita
dc.contributor.authorTaborda-Barata, Luis
dc.contributor.institutionComprehensive Health Research Centre (CHRC) - Pólo ENSP
dc.contributor.institutionCentro de Investigação em Saúde Pública (CISP/PHRC)
dc.contributor.institutionEscola Nacional de Saúde Pública (ENSP)
dc.contributor.pblPLOS - Public Library of Science
dc.date.accessioned2026-01-16T18:24:08Z
dc.date.available2026-01-16T18:24:08Z
dc.date.issued2025-10
dc.descriptionPublisher Copyright: © 2025 Dos Santos et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.description.abstractBackground Validated questionnaires for adequately assessing knowledge about asthma are scarce. Thus, the primary objective of the present study was to develop and validate an asthma self-knowledge questionnaire, based on international recommendations on the disease. The secondary objectives were to compare knowledge about asthma between asthmatic patients and non-asthmatic individuals; assessing whether asthma affects the level of self-knowledge of the disease and what factors may be associated with poorer self-knowledge of the disease. Methods The Bronchial Asthma Self-Knowledge Questionnaire was developed, and validation studies were performed: logical or apparent validity, content validity, construct validity; internal consistency (Cronbach’s alpha test), test-retest or reproducibility, in a face-to-face survey with 104 asthmatic patients and 131 non-asthmatic individuals (n = 235). Other questionnaires were also applied: Mini Mental State Examination (in individuals over 65 years of age), Depression Scales (CES-D for individuals under 65 and GDS for individuals over 65 years of age), Demographic Questionnaire, Health Literacy, and the Characterization Questionnaire for bronchial asthma. Results Regarding development of the questionnaire, content validity, determined using I-CVI allowed reducing the questionnaire to 21 items. The test proved to have an acceptable value of in-ternal consistency and the data were considered as normally distributed; the questionnaire presented good temporal stability, by test-retest, although Spearman rho values were significantly stronger in the asthmatic group. Finally, confirmatory factorial analysis yielded acceptable values for PCFI and PGFI, as well as a satisfactory value for RMSEA. In terms of the application of the questionnaire, both groups under study (asthmatics and non-asthmatics) showed statistically significant differences in replies of self-knowledge questionnaire items. Finally, factors such as health literacy disturbances seem to marginally influence self-knowledge of bronchial asthma. Conclusions The developed and validated questionnaire showed adequate psychometric robustness. In terms of construct validity, by known group (bronchial asthma) validity, the test was able to discriminate between patients with asthma and participants without asthma, regarding self-knowledge of the disease.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent876313
dc.identifier.doi10.1371/journal.pone.0333760
dc.identifier.issn1932-6203
dc.identifier.otherPURE: 150031963
dc.identifier.otherPURE UUID: 851f58da-8cad-44b6-8e4b-17694860a4a0
dc.identifier.otherScopus: 105020652105
dc.identifier.otherPubMed: 41171753
dc.identifier.otherPubMedCentral: PMC12578227
dc.identifier.otherWOS: 001606905600037
dc.identifier.urihttp://hdl.handle.net/10362/199496
dc.identifier.urlhttps://www.scopus.com/pages/publications/105020652105
dc.language.isoeng
dc.peerreviewedyes
dc.subjectGeneral
dc.subjectSDG 3 - Good Health and Well-being
dc.titleDevelopment and validation of an asthma self-knowledge questionnaireen
dc.typejournal article
degois.publication.issue10 October
degois.publication.titlePLoS ONE
degois.publication.volume20
dspace.entity.typePublication
rcaap.rightsopenAccess

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