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Inicio Revista Colombiana de Reumatología (English Edition) Validation of FACIT-fatigue in Spanish-speaking patients with rheumatoid arthrit...
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Vol. 31. Issue 4.
Pages 435-441 (October - December 2024)
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Vol. 31. Issue 4.
Pages 435-441 (October - December 2024)
Original Investigation
Validation of FACIT-fatigue in Spanish-speaking patients with rheumatoid arthritis
Validación de la escala FACIT-fatiga en una muestra de población hispanohablante con artritis reumatoide
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Samantha Rodríguez-Muguruzaa,
Corresponding author
slrodriguez.hj23.ics@gencat.cat

Corresponding author.
, Sonia Castroa, María José Povedaa, Silvia Paredesb, Delia Tavernerb, Oliver Valeroc, Ramon Fontovaa
a Rheumatology Service, Hospital Universitari Joan XXIII, Tarragona, Spain
b Rheumatology Service, Hospital Universitari Sant Joan, Reus, Spain
c Department of Applied Statistics, Faculty of Sciences, Universidad Autónoma de Barcelona, Barcelona, Spain
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Figures (1)
Tables (3)
Table 1. Descriptive analysis of each item and floor-ceiling effect of the FACIT-F scale.
Table 2. Percentage of variability explained for each item.
Table 3. Correlation and 95% confidence interval between FACIT-F: VAS-F, BRAF-MDQ and other variables of interest.
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Abstract
Introduction

Fatigue is a frequent symptom in patients with rheumatoid arthritis (RA). The Functional Assessment of Chronic illnesses Therapy-Fatigue (FACIT-F) is an instrument that assesses self-reported fatigue and was validated for measuring fatigue in RA.

Objective

The aim of this study was to validate the FACIT-F for use in Spanish-speaking RA patients.

Materials and methods

Cross-sectional, multicentre study. We included patients (n = 192) with RA diagnosis from two hospitals. Exploratory and confirmatory analyses were conducted. Construct validity and internal consistency were evaluated.

Results

FACIT-F showed high internal consistency (Alpha = .87, Omega = .93). Analysis of the main components showed a single factor, which explained 62% of the variance. The confirmatory factor analysis showed a satisfactory fit of the model. We found a correlation between FACIT–F, VAS fatigue (−.72 p-value <,001), and BRAF-MDQ (−.81 p-value <.001).

Conclusion

FACIT-F is a valid instrument with a high internal consistency for measuring fatigue in clinical practice and research in Spanish-speaking patients with RA.

Keywords:
Fatigue
Rheumatoid arthritis
Instrument validation
Functional Assessment of Chronic illnesses Therapy-Fatigue (FACIT-F)
Validation study
Resumen
Introducción

La fatiga es un síntoma frecuente entre los pacientes con artritis reumatoide (AR). La Escala de Evaluación Funcional de Terapia de Enfermedades Crónicas-Fatiga (FACIT-F) es una herramienta usada para medir la fatiga.

Objetivo

El objetivo de este estudio fue la validación de FACIT-F en una población hispanohablante con AR.

Materiales y métodos

Diseño transversal multicéntrico. Se incluyeron pacientes con AR (n = 192). Se realizó un análisis factorial exploratorio y confirmatorio para la escala FACIT-F. Se evaluó la validez del constructo y la consistencia interna del cuestionario.

Resultados

FACIT-F presentó una alta consistencia interna (Alfa = 0,87, Omega = 0,93). El análisis de componentes principales mostró un solo factor, lo que explicó el 62% de la varianza total. El análisis factorial confirmatorio mostró un ajuste satisfactorio del modelo. Se observó una fuerte correlación significativamente estadística entre FACIT–F, EVA fatiga (-0,72 p-valor <0,001) y BRAF-MDQ (-0,81 p-valor <0,001).

Conclusión

FACIT-F es un instrumento válido y con alta consistencia interna para medir la fatiga en la práctica clínica y en la investigación dirigidas a la población hispanohablante con AR.

Palabras clave:
Fatiga
Artritis reumatoide
Validación de un instrumento
Escala de Evaluación Funcional de Terapia de Enfermedades Crónicas-Fatiga (FACIT-F)
Estudio de validación

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