Repositorio
Institucional

Astudillo Diaz, Paula

Luarte-Martinez, Soledad

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

SOC ARGENTINA PEDIATRIA

ARCHIVOS ARGENTINOS DE PEDIATRIA

en

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.

Artículo original

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.

10.5546/aap.2017.eng.e370

pdf

exploratory factor analysis# obstructive pulmonary diseases# scales

http://dx.doi.org/10.5546/aap.2017.eng.e370

Pediatrics

análisis factorial exploratorio# enfermedades pulmonares obstructivas# balanza

Pediatría

Sistema Respiratorio

Estadísticas y Probabilidades

WOS:000417562600012

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

Artículo original

version publicada

SOC ARGENTINA PEDIATRIA

ARCHIVOS ARGENTINOS DE PEDIATRIA

Pediatría

0325-0075

en

UdeC VRID 215.082.050IN

UdeC 215.082.050IN

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.

pdf

dorada#verde

acceso abierto

acceso abierto

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