RESUMO
PURPOSE: To present the sensitivity and specificity and establish cutoff points (receiver operating characteristic [ROC] curve) for the PraxiFala Battery. METHOD: The sample included 308 Brazilian-speaking children aged 3;0-7;11. Twenty-one children had motor speech disorders (MSD), 58 children had phonological disorder (PD), and 229 had typical speech (TS) development. Participants were administered the PraxiFala Battery, which contains verbal (word and sentence production), nonverbal (orofacial praxis), and diadochokinetic tasks. The sensitivity and specificity of items in each task were then calculated using ROC curves. RESULT: Total scores on the verbal (word production), nonverbal (orofacial praxis), and diadochokinetic tasks had good sensitivity and specificity. The only scores with poor sensitivity and specificity in differentiating between TS, PD, and MSD were consistency and prosody in the verbal tasks (sentence production), and item /ta/ in the diadochokinetic task. Area under the ROC curve (AUC) values were greater than 0.7 for most items in the comparison between TS vs. MSD and PD vs. MSD. AUC values were poor or fair among children with TS and PD, suggesting that this instrument may not be accurate in identifying these groups. CONCLUSION: The verbal, nonverbal, and diadochokinetic tasks in the PraxiFala Battery had good sensitivity and specificity.
RESUMO
El objetivo de este artículo es exponer los resultados de un estudio normativo del rendimiento articulatorio de individuos chilenos normales, medido con los cinco parámetros que entrega el protocolo de rendimiento diadococinético del programa Motor Speech Profile de KayPentax. La intención es proporcionar a la comunidad fonoaudiológica valores de referencia de una muestra de hablantes del país para que puedan ser utilizados en la aplicación clínica y académica de este instrumento. Mediante el procedimiento de muestra espejo, se replica el estudio con el que se obtuvieron los valores de referencia originales del programa en una muestra de hablantes de inglés norteamericano. Además, se c omparan ambos estudios con el propósito de determinar las diferencias y similitudes en el rendimiento de cada uno de los parámetros. Se concluye que tanto el DDKcvp como el DDKcvi manifiestan un comportamiento similar en ambos grupos y que el resto de los parámetros presenta ciertas diferencias. No obstante, en todos los parámetros es posible establecer un rango de variación que permite definir el comportamiento normal...
The present study aim to provide normative data of articulatory performance in normal Chilean individuals. The normative values obtained can serve as reference values from Chilean speakers which the speech-language pathology community can use in clinical and academic practice. The five parameters defined in the diadochokinetic protocol in the Motor Speech Profile of the KayPentax program were used. The method employed in the study which obtained the reference values from America English speakers was also adopted in this study. Furthermore, a comparison between the English and Spanish studies was carried out. DDKcvp and DDKcvi showed similar behavior in both groups. The other parameters presented some differences. However, a normal range for all parameters was possible to obtain...