Dyspnea Index: An upper airway obstruction instrument; translation and validation in Swedish
Autor: | Eleftherios Ntouniadakis, Ole Brus, Mathias von Beckerath |
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Rok vydání: | 2021 |
Předmět: |
Adult
Male medicine.medical_specialty Adolescent Psychometrics Intraclass correlation Visual analogue scale Population laryngotracheal stenosis Dyspnea Index Cronbach's alpha Surveys and Questionnaires medicine Humans Translations Prospective Studies Voice Handicap Index education Aged Aged 80 and over Sweden validation education.field_of_study business.industry Reproducibility of Results Construct validity Original Articles Middle Aged Airway obstruction medicine.disease Airway Obstruction Dyspnea quality of life Otorhinolaryngology paradoxical vocal fold movement Case-Control Studies upper airway obstruction Physical therapy Patient‐Reported Outcome Measures Ceiling effect Female Original Article business |
Zdroj: | Clinical Otolaryngology |
ISSN: | 1749-4486 1749-4478 |
Popis: | Objective Upper airway dyspnoea is a challenging condition in which assessing the discomfort experienced by the patient is essential. There are three patient‐reported outcome (PRO) instruments developed particularly for this patient group, none of which is available in Swedish. The aim of this study was to translate the Dyspnea Index (DI) into Swedish and validate the instrument for use in the Swedish‐speaking population by investigating its basic psychometric properties. Design A prospective instrument validation study. Setting Tertiary referral centre. Participants Fifty‐three (n = 53) patients with upper airway dyspnoea and 19 healthy controls. Main outcome measures The questionnaire was translated into Swedish (swDI) with a forward‐backward method. Reliability, repeatability, responsiveness and construct validity were assessed by asking the subjects to complete the swDI, a visual analog scale (VAS) at exertion and at rest and the Voice Handicap Index (VHI). Results The swDI showed excellent internal consistency (Cronbach's α: 0.85) and repeatability (interclass correlation coefficient: 0.87 and Pearson's r: .89) in the patient group. No ceiling effect was observed (maximum score achieved was 39; 85% of the patients scored ≤ 36). SwDI scores moderately correlated with VAS at exertion (r: .59) and at rest (r: .42), yet poorly with the VHI (r: .36). The effect size (ES) was 3.8. Conclusions The swDI is a valid, robust and reliable questionnaire for self‐assessment in Swedish‐speaking patients with upper airway obstruction. A future anchor‐based longitudinal study is needed to assess the smallest detectable change (SDC) and minimal important change (MIC) that were not estimated in our study. |
Databáze: | OpenAIRE |
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