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CC BY-NC-ND 4.0 · Int Arch Otorhinolaryngol 2021; 25(01): e92-e97
DOI: 10.1055/s-0040-1701270
Original Research

Validity and Reliability of the Thai Version of the Thyroid-Related Patient-Reported Outcome—A Thyroid-specific Quality of Life Questionnaire

Patorn Piromchai 
1   Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
,
Supachat Chaiudomsom
1   Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
,
Pattaramon Wijakkanalan
1   Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
,
Torquil Watt
2   Department of Medical Endocrinology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
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Abstract

Introduction The Thyroid-Related Patient-Reported Outcome (ThyPRO) is a new thyroid-specific quality of life patient-reported outcome measure for benign thyroid disorders.

Objective The objective of this study was to investigate the face validity, internal consistency, and test-retest reliability of the Thai version of the ThyPRO (ThyPROth).

Methods The translation of the ThyPRO questionnaire was performed using double forward translation, reconciliation, single backward translation, and cognitive debriefing, followed by a panel review. Five thyroid patients evaluated the face validity. The internal consistency and test-retest reliability were evaluated in 30 patients with thyroid diseases.

Results The overall validity score was 3.75 (range 0–4). The Cronbach α coefficient ranged from 0.76 to 0.95, with a total coefficient of 0.97 (95% CI 0.962–0.959), indicating excellent internal consistency. The test-retest reliability coefficient ranged from 0.70 to 0.97. All values were 0.70 and above. The total reliability coefficient was 0.86 (95% CI 0.724–0.932), indicating excellent reliability.

Conclusion The ThyPROth was found to be valid and to exhibit good internal consistency and test-retest reliability. The questionnaire is ready for implementation in the assessment of health-related quality of life in Thai patients with benign thyroid diseases.

Keywords

thyroid - quality of life - questionnaire - hyperthyroidism - hypothyroidism - thyroid neoplasms

Supplementary Material



Publication History

Received: 13 August 2019

Accepted: 03 December 2019

Article published online:
27 April 2020

© 2020. Fundação Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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