Validation of the Leicester Cough Questionnaire in Brazilian Portuguese.

IF 0.8 Q4 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY

CoDAS Pub Date : 2025-09-29 eCollection Date: 2025-01-01 DOI:10.1590/2317-1782/e20240391en

Rodrigo Dornelas, Vanessa Veis Ribeiro, Alice Lopes, Thassiany Carpanez, Surinder Birring, Mara Behlau

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Abstract

Purpose: This study aimed to validate the Leicester Cough Questionnaire (LCQ) for Brazilian Portuguese.

Methods: Validation followed the Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN). Data collection included a sociodemographic questionnaire, the translated version of LCQ-Brazil (LCQ-Br), self-perception of laryngeal sensitivity, cough frequency and intensity, the Cough Severity Index (CSI-Br), and the Newcastle Laryngeal Hypersensitivity Questionnaire (LHQ-Br). The LCQ-Br retained its original structure with 19 items across physical, psychological, and social domains. Participants completed the LCQ-Br on three occasions to assess validity, reliability, and responsiveness.

Results: Ninety-eight patients with chronic cough (79% women; mean age of 49) participated. Construct validation confirmed the LCQ-Br's factorial structure. For concurrent validity, negative correlations were observed between LCQ-Br domains and self-perceived laryngeal sensitivity, cough frequency and intensity, and CSI-Br factors (physical, social, psychological, and total scores). A positive correlation was found between the LCQ-Br total and LHQ-Br scores. Internal consistency was high (Cronbach's alpha = 0.952), and test-retest reliability yielded a coefficient of 0.455. The responsiveness analysis demonstrated significant reductions in LCQ-Br scores post-intervention for physical, psychological, and total domains.

Conclusion: The LCQ-Br is a valid, reliable, and responsive tool for assessing health status in chronic cough patients, making it suitable for clinical practice and research applications.

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莱斯特咳嗽问卷在巴西葡萄牙语的验证。

目的：本研究旨在验证莱斯特咳嗽问卷（LCQ）对巴西葡萄牙人的影响。方法：采用基于共识的健康测量仪器选择标准（COSMIN）进行验证。数据收集包括社会人口调查问卷、巴西LCQ-Br （LCQ-Br）翻译版、喉敏感性自我感知、咳嗽频率和强度、咳嗽严重程度指数（CSI-Br）和纽卡斯尔喉超敏反应问卷（LHQ-Br）。LCQ-Br保留了原来的结构，包括生理、心理和社会领域的19个项目。参与者分三次完成LCQ-Br问卷，以评估效度、信度和反应性。结果：98例慢性咳嗽患者（79%为女性，平均年龄49岁）参与了研究。构式验证证实了LCQ-Br的析因结构。对于并发效度，LCQ-Br域与自我感知喉敏感、咳嗽频率和强度以及CSI-Br因子（生理、社会、心理和总分）呈负相关。LCQ-Br总分与LHQ-Br得分呈正相关。内部一致性高（Cronbach’s alpha = 0.952），重测信度系数为0.455。反应性分析表明，干预后LCQ-Br得分在生理、心理和总领域显著降低。结论：LCQ-Br是一种有效、可靠、反应灵敏的慢性咳嗽患者健康状况评估工具，适合临床实践和研究应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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