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Inicio Revista de Logopedia, Foniatría y Audiología Psychometric validity of the Portuguese version of SWAL-QOL for head and neck ca...
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Vol. 41. Issue 3.
Pages 133-141 (July - September 2021)
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Vol. 41. Issue 3.
Pages 133-141 (July - September 2021)
Original article
Psychometric validity of the Portuguese version of SWAL-QOL for head and neck cancer
Validez psicométrica de la versión portuguesa de SWAL-QOL en el cáncer de cabeza y cuello
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Daniela Oliveira Vieiraa,b,c,
Corresponding author
dvieira@ufp.edu.pt

Corresponding author.
, Eva Bolle Antunesc, Mário Dinis-Ribeirod,e, Eurico Monteirof,g
a Fernando Pessoa University – Praça 9 de Abril 349, Locker 109, 4249-004 Porto, Portugal
b Speech and Language Pathologist at School-Hospital Fernando Pessoa, Gondomar, Portugal
c Fernando Pessoa University, Department of Speech and Language Pathology, Porto, Portugal
d CIDES/CINTESIS, Faculty of Medicine, University of Porto, Portugal
e Gastroenterology Department, Oncology Portuguese Institute of Porto, Portugal
f University Fernando Pessoa, Portugal
g ENT Department, Oncology Portuguese Institute of Porto, Portugal
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Tables (11)
Table 1. Characterization of the sample by gender, age, marriage status and education.
Table 2. Distribution of participants with head and neck cancer according to TNM staging system.
Table 3. Distribution of the sample according to location of the injury.
Table 4. Type of treatment.
Table 5. Characterization of the treatment.
Table 6. Distribution of results (N=300).
Table 7. Correlation matrix of SWAL-QOL and PSS.
Table 8. Prevalence of dysphagia symptoms (N=300).
Table 9. Results of validity for clinical severity of pharyngeal symptoms.
Table 10. Results of validity for clinical severity of oral symptoms.
Table 11. Results of validity for clinical severity of saliva symptoms.
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Abstract
Introduction and aim

In Portugal there are no instruments that measure the impact of dysphagia on the quality of life. The aim of this study was the assessment of the psychometric properties of the Portuguese version of SWAL-QOL, in a head and neck cancer population.

Materials and methods

It was a case–control study, with a consecutive sample of 300 subjects that was divided into 3 groups (2 controls and 1 case). We performed principal components analysis, assessed reliability and clinical validity. For concurrent validity of the Portuguese version of SWAL-QOL, the Functional Scale of Oral Intake (FOIS) and the Performance Status Scale (PSS) for patients with head and neck cancer were used.

Results

The sample was predominantly male (66%) with a mean age of 57 years. Regarding the patients with head and neck cancer, 22% were in stage IIIA, and 43% had lesions on the larynx. As to the treatment provided, 33% underwent surgery and radiotherapy, and 80% of cases had oral feeding. The psychometric validity of SWAL-QOL was established, with good results for internal consistency (from .665 to .952), reproducibility (from .628 to .877) and construct validity. SWAL-QOL also showed good correlation with the clinical variable dysphagics vs. non-dysphagics. There were no statistical significant differences for the consistency of food and fluids, and oral vs. non-oral nutrition.

Conclusions

The validation of SWAL-QOL for the Portuguese language revealed that this instrument is psychometrically valid and appropriate for use with dysphagic patients with head and neck cancer.

Keywords:
Quality of life
Dysphagia
Head and neck cancer
Questionnaires
Swallowing disorder
Resumen
Introducción y objetivo

En Portugal no existen instrumentos que midan el impacto de la disfagia en la calidad de vida. El objetivo de este estudio fue evaluar las propiedades psicométricas de la versión portuguesa de SWAL-QOL, en una población de pacientes de cáncer de cabeza y cuello.

Materiales y métodos

Estudio de control de casos, con una muestra consecutiva de 300 sujetos, que se dividió en 3 grupos (2 grupos control y un caso). Realizamos un análisis de los componentes principales, y evaluamos la fiabilidad y la validez clínica. Para la validez concurrente de la versión portuguesa de SWAL-QOL, utilizamos la Functional Scale of Oral Intake (FOIS) y la Performance Status Scale (PSS) para los pacientes de cáncer de cabeza y cuello.

Resultados

La muestra se compuso fundamentalmente de varones (66%), con una edad media de 57 años. Con relación a los pacientes de cáncer de cabeza y cuello, el 22% estaba en estadio IIIA y el 43% tenía lesiones en la laringe. En cuanto a la terapia suministrada, el 33% recibió cirugía y radioterapia y el 80% de los casos recibió alimentación oral. Se estableció la validez psicométrica de SWAL-QOL, con buenos resultados para consistencia interna (de 0,665 a 0,592), reproducibilidad (de 0,628 a 0,877), y validez del constructo. SWAL-QOL reflejó también una buena correlación con la variable clínica disfágicos vs no disfágicos. No se produjeron diferencias estadísticamente significativas para la consistencia de alimentos y líquidos y nutrición oral vs no oral.

Conclusiones

La validación de SWAL-QOL para el idioma portugués reveló que se trata de un instrumento psicométricamente válido para uso con pacientes disfágicos de cáncer de cabeza y cuello.

Palabras clave:
Calidad de vida
Disfagia
Cáncer de cabeza y cuello
Cuestionarios
Trastornos de la deglución

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