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A Scoping Review to Map Health Outcomes in Inducible Laryngeal Obstruction

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Title: A Scoping Review to Map Health Outcomes in Inducible Laryngeal Obstruction
Language: English
Authors: S. F. Ludlow (ORCID 0000-0002-4128-9651), L. J. Holmes (ORCID 0000-0002-4321-3220), L. Simpson, L. Byrne-Davis (ORCID 0000-0002-9658-5394), S. J. Fowler (ORCID 0000-0002-4524-1663)
Source: International Journal of Language & Communication Disorders. 2026 61(1).
Availability: Wiley. Available from: John Wiley & Sons, Inc. 111 River Street, Hoboken, NJ 07030. Tel: 800-835-6770; e-mail: cs-journals@wiley.com; Web site: https://www.wiley.com/en-us
Peer Reviewed: Y
Page Count: 44
Publication Date: 2026
Document Type: Journal Articles
Information Analyses
Descriptors: Literature Reviews, Meta Analysis, Speech Communication, Physiology, Human Body, Physical Disabilities, Evaluation Methods, Environmental Influences, Individual Characteristics, Adults, Children
DOI: 10.1111/1460-6984.70169
ISSN: 1368-2822
1460-6984
Abstract: Background: Inducible laryngeal obstruction (ILO) is defined as an inappropriate laryngeal closure causing difficulty in breathing. Outcome measures can be used in ILO to monitor changes in health status over time. A comprehensive review of existing measures is important to understand what the targets of treatment and management are and whether there is a need for development of new tools. Aims: To systematically evaluate the literature reporting outcomes in individuals with ILO, identifying what is measured, whether there is consistency of measurement to enable synthesis of evidence for treatment and management, and whether measurement considers the areas of body function and structure, activity and contextual factors in line with the World Health Organisation International Classification of Functioning, Disability and Health framework (WHO-ICF). Methods: A systematic search was conducted of MEDLINE, EMBASE, CINAHL, Scopus, PsycINFO, Web of Science and Google Scholar between December 2023 and December 2024. Two reviewers independently screened titles, abstracts and full texts for inclusion and extracted data using Covidence software. Outcomes were tabulated according to measurement type and components of the WHO-ICF framework. Main Contributions: A total of 658 titles and abstracts were screened; 255 progressed to full text review, with 49 full text articles being included. Twenty-three studies (47%) followed a prospective observational design, 17 (35%) a retrospective case note review, 5 (10%) an experimental case control design, 2 (4%) survey design and 2 (4%) case reports. Studies included ILO [adults in 18 studies (37%), children 20 studies (41%), and both adults and children in 11 studies (22%)]. Outcomes were collected at two or more time points within a single day to over three years. Thirteen (26%) studies measured performance outcomes, 15 (31%) clinician-reported outcomes, 48 (97%) patient-reported outcomes, and 2 (4%) observer-reported outcomes. Several of the studies considered the impairments of body function, structure and activity limitations in line with the WHO-ICF framework but environmental factors and personal factors were rarely considered. Conclusions: The findings demonstrate variation in the outcome measures used in ILO research and that measures of personal and environmental impacts are rare. There is a need for consensus of a core outcome set across the spectrum of ILO research and/or clinics that capture the full range of impact and facilitate evidence synthesis.
Abstractor: As Provided
Entry Date: 2026
Accession Number: EJ1495150
Database: ERIC
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  Data: A Scoping Review to Map Health Outcomes in Inducible Laryngeal Obstruction
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  Data: <searchLink fieldCode="AR" term="%22S%2E+F%2E+Ludlow%22">S. F. Ludlow</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-4128-9651">0000-0002-4128-9651</externalLink>)<br /><searchLink fieldCode="AR" term="%22L%2E+J%2E+Holmes%22">L. J. Holmes</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-4321-3220">0000-0002-4321-3220</externalLink>)<br /><searchLink fieldCode="AR" term="%22L%2E+Simpson%22">L. Simpson</searchLink><br /><searchLink fieldCode="AR" term="%22L%2E+Byrne-Davis%22">L. Byrne-Davis</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-9658-5394">0000-0002-9658-5394</externalLink>)<br /><searchLink fieldCode="AR" term="%22S%2E+J%2E+Fowler%22">S. J. Fowler</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-4524-1663">0000-0002-4524-1663</externalLink>)
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  Data: Wiley. Available from: John Wiley & Sons, Inc. 111 River Street, Hoboken, NJ 07030. Tel: 800-835-6770; e-mail: cs-journals@wiley.com; Web site: https://www.wiley.com/en-us
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  Data: 10.1111/1460-6984.70169
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  Data: 1368-2822<br />1460-6984
– Name: Abstract
  Label: Abstract
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  Data: Background: Inducible laryngeal obstruction (ILO) is defined as an inappropriate laryngeal closure causing difficulty in breathing. Outcome measures can be used in ILO to monitor changes in health status over time. A comprehensive review of existing measures is important to understand what the targets of treatment and management are and whether there is a need for development of new tools. Aims: To systematically evaluate the literature reporting outcomes in individuals with ILO, identifying what is measured, whether there is consistency of measurement to enable synthesis of evidence for treatment and management, and whether measurement considers the areas of body function and structure, activity and contextual factors in line with the World Health Organisation International Classification of Functioning, Disability and Health framework (WHO-ICF). Methods: A systematic search was conducted of MEDLINE, EMBASE, CINAHL, Scopus, PsycINFO, Web of Science and Google Scholar between December 2023 and December 2024. Two reviewers independently screened titles, abstracts and full texts for inclusion and extracted data using Covidence software. Outcomes were tabulated according to measurement type and components of the WHO-ICF framework. Main Contributions: A total of 658 titles and abstracts were screened; 255 progressed to full text review, with 49 full text articles being included. Twenty-three studies (47%) followed a prospective observational design, 17 (35%) a retrospective case note review, 5 (10%) an experimental case control design, 2 (4%) survey design and 2 (4%) case reports. Studies included ILO [adults in 18 studies (37%), children 20 studies (41%), and both adults and children in 11 studies (22%)]. Outcomes were collected at two or more time points within a single day to over three years. Thirteen (26%) studies measured performance outcomes, 15 (31%) clinician-reported outcomes, 48 (97%) patient-reported outcomes, and 2 (4%) observer-reported outcomes. Several of the studies considered the impairments of body function, structure and activity limitations in line with the WHO-ICF framework but environmental factors and personal factors were rarely considered. Conclusions: The findings demonstrate variation in the outcome measures used in ILO research and that measures of personal and environmental impacts are rare. There is a need for consensus of a core outcome set across the spectrum of ILO research and/or clinics that capture the full range of impact and facilitate evidence synthesis.
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