Exploratory factor analysis of a score for grading the severity of bronchial obstruction evaluated in children younger than 3 years old, Chile, 2015

Primer Autor
Astudillo Diaz, Paula
Co-autores
Luarte-Martinez, Soledad
Título
Exploratory factor analysis of a score for grading the severity of bronchial obstruction evaluated in children younger than 3 years old, Chile, 2015
Editorial
SOC ARGENTINA PEDIATRIA
Revista
ARCHIVOS ARGENTINOS DE PEDIATRIA
Lenguaje
en
Resumen
Introduction. The modified Tal's score has been used in Chile to determine the severity of bronchial obstruction. Its validity has been reported already, however, its structure as a scale to significantly quantify the severity of bronchial obstruction has not been analyzed. Objective. To identify the relationship pattern among the score's items and the severity of bronchial obstruction in a sample of children younger than 3 years seen in two health care centers in the province of Concepcion, Chile. Method. Exploratory factor analysis. Non-random, voluntary selection of participants younger than 36 months, August-November 2015. Participants were assessed independently and subsequently by a physician and a physical therapist. The following measurements were applied: central tendency, exploratory factor analysis, subgroups of participants younger and older than 6 months, and internal consistency. Results. A total of 204 measurements were done in 102 children. With a 39% explained variance, items incline towards to two different concepts: one factor groups respiratory rate, wheezing, and retractions, and the other determines only cyanosis, with a Cronbach's alpha of 0.5. Once cyanosis is removed from the analysis, the original one-factor matrix sample shows a 38% total explained variance and a 0.62 internal consistency. Conclusions. Based on its items, the score's structure does not fit adequately to this sample. Cyanosis appears as a dissociated item within the structure. Once the model is adjusted to only 3 items, the stability of Chronbach's alpha as a measure of internal consistency increases but at an objectionable value, which will undoubtedly vary once it is applied to a different sample.
Tipo de Recurso
Artículo original
Description
Funding: This study was funded by the Vice-Rectorship of Research and Development (Vicerrectoria de Investigacion y Desarrollo, VRID) of Universidad de Concepcion, project no. 215.082.050IN.
Financiamiento: Este estudio fue financiado por la Vicerrectoría de Investigación y Desarrollo (VRID) de la Universidad de Concepción, proyecto no. 215.082.050IN.
doi
10.5546/aap.2017.eng.e370
Formato Recurso
pdf
Palabras Claves
exploratory factor analysis# obstructive pulmonary diseases# scales
Ubicación del archivo
http://dx.doi.org/10.5546/aap.2017.eng.e370
Categoría OCDE
Pediatrics
Materias
análisis factorial exploratorio# enfermedades pulmonares obstructivas# balanza
Disciplinas de la OCDE
Pediatría
Sistema Respiratorio
Estadísticas y Probabilidades
Id de Web of Science
WOS:000417562600012
Título de la cita (Recomendado-único)
Exploratory factor analysis of a score for grading the severity of bronchial obstruction evaluated in children younger than 3 years old, Chile, 2015
Identificador del recurso (Mandatado-único)
Artículo original
Versión del recurso (Recomendado-único)
version publicada
Editorial
SOC ARGENTINA PEDIATRIA
Revista/Libro
ARCHIVOS ARGENTINOS DE PEDIATRIA
Categoría WOS
Pediatría
ISSN
0325-0075
Idioma
en
Referencia del Financiador (Mandatado si es aplicable-repetible)
UdeC VRID 215.082.050IN
UdeC 215.082.050IN
Descripción
Funding: This study was funded by the Vice-Rectorship of Research and Development (Vicerrectoria de Investigacion y Desarrollo, VRID) of Universidad de Concepcion, project no. 215.082.050IN.
Formato
pdf
Tipo de ruta
dorada#verde
Access Rights
acceso abierto
Derechos de acceso
acceso abierto
Página de inicio (Recomendado-único)
191
Página final (Recomendado-único)
208
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