SciELO - Scientific Electronic Library Online

vol.115 número6Impacto de la aplicación de una guía clínica basada en la evidencia en el tratamiento del reflujo vesicoureteral primario en el niñoAnálisis de las interconsultas con dermatología pediátrica de pacientes hospitalizados en un hospital pediátrico universitario índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




  • No hay articulos citadosCitado por SciELO

Links relacionados

  • No hay articulos similaresSimilares en SciELO


Archivos argentinos de pediatría

versión impresa ISSN 0325-0075versión On-line ISSN 1668-3501


LUARTE-MARTINEZ, Soledad  y  ASTUDILLO DIAZ, Paula. Exploratory factor analysis of a score for grading the severity of bronchial obstruction evaluated in children younger than 3 years old, Chile, 2015. Arch. argent. pediatr. [online]. 2017, vol.115, n.6, pp.e370-e376. ISSN 0325-0075.

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 Concepción, Chile. Method. Exploratory factor analysis. Nonrandom, voluntary selection of participants youngerthan36months, 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.

Palabras clave : Exploratory factor analysis; Obstructive pulmonary diseases; Scales.

        · resumen en Español     · texto en Español     · Español ( pdf ) | Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons