Validación de indicadores de perturbación de Jitter y Shimmer en docentes de primera infancia.

Abstract

INTRODUCTION: This study aimed to measure the degree of sensitivity and specificity of Jitter and Shimmer disturbance indicators, taken by Praat software, in early childhood teachers in the Municipality of San José de Cúcuta, Norte de Santander. METHODS: This investigation corresponds to a quantitative study, of transversal, descriptive, analyzed statistically, by means of the ROC curve. RESULTS: It was determined that the accuracy of the test was seventy-sixpoint one percent, that is, that most of the time it classifies well, in the eighty-point five percent of the cases is sensitive and has forty percent of specificity. It means then, that the degree of reliability of the test is high and the Jitter and Shimmer disturbance indicators allow us to give a correct classification in most cases. ANALYSIS AND DISCUSSION: Jitter and Shimmer disturbance indicators are valid and reliable indicators to distinguish subjects with and without vocal disorder; This coincides with studies conducted such as Pinero and Pire in 2002, who reported reliability in all parameters evaluated, including those of Jitter and Shimmer, and concluded that the acoustic analysis was effective to evaluate the voice. CONCLUSIONS: Jitter and Shimmer disturbance indicators are sensitive and specific to give a diagnosis of vocal pathology, yielding a high degree of reliability of the test.