Atributos psicométricos de la versión española de la escala de cribado A-TAC para trastornos del espectro autista / Psychometric attributes of the spanish version of A-TAC screening scale for autism spectrum disorders

Introducción: Actualmente debido a la ausencia de marcadores biológicos, el cribado de trastornos del espectro autista (TEA) se centra fundamentalmente en la presencia de alteraciones conductuales caracterizadas por alteraciones en la interacción social y comunicación verbal y no verbal. Objetivo: Evaluar los atributos psicométricos de la versión española de la escala de autismo Autism-Tics, AD/HD and other Comorbidities Inventory (A-TAC), como medida de cribado de TEA. Material y métodos: Se incluyó en el estudio a 140 escolares (43% niños, 57% niñas), de edades comprendidas entre los 6 y los 16 años, con TEA (n = 15), discapacidad intelectual (n = 40), enfermedades psiquiátricas (n = 22), tics (n = 12) y participantes controles (n = 51). Se analizaron los principales atributos psicométricos como la fiabilidad, asunción escalar, la consistencia interna, la precisión y la validez predictiva. Resultados: La consistencia interna de la A-TAC fue alta (α = 0,93) y el error estándar de medida fue adecuado (1,13 [intervalo de confianza del 95%, —1,08 a 3,34]). Las puntuaciones medias de la escala A-TAC fueron más altas en participantes diagnosticados con TEA y discapacidad intelectual comparadas con el resto de participantes (p < 0,001), siendo el área bajo la curva de 0,96 para el grupo de TEA. Conclusión: La subescala de autismo de la escala A-TAC es un instrumento fiable, válido y preciso para el cribado de TEA en la población escolar española (AU)

Background: As there are no biological markers for Autism Spectrum Disorders (ASD), screening must focus on behaviour and the presence of a markedly abnormal development or a deficiency in verbal and non-verbal social interaction and communication. Objective: To evaluate the psychometric attributes of a Spanish version of the autism domain of the Autism-Tics, AD/HD and other Comorbidities Inventory (A-TAC) scale for ASD screening. Material and methods: A total of 140 subjects (43% male, 57% female) aged 6-16, with ASD (n = 15), Mental Retardation (n = 40), Psychiatric Illness (n = 22), Tics (n = 12) and controls (n = 51), were included for ASD screening. The predictive validity, acceptability, scale assumptions, Internal consistency, and precision were analysed. Results: The internal consistency was high (α = 0.93), and the standard error was adequate (1.13 [95% CI, -1.08 a 3.34]). The mean scores of the Autism module were higher in patients diagnosed with ASD and mental disability compared to the rest of the patients (P < 0.001). The area under the curve was 0.96 for the ASD group. Conclusion: The autism domain of the A-TAC scale seems to be a reliable, valid and precise tool for ASD screening in the Spanish school population (AU)

[Psychometric attributes of the Spanish version of A-TAC screening scale for autism spectrum disorders]. / Atributos psicométricos de la versión española de la escala de cribado A-TAC para trastornos del espectro autista.

BACKGROUND: As there are no biological markers for Autism Spectrum Disorders (ASD), screening must focus on behaviour and the presence of a markedly abnormal development or a deficiency in verbal and non-verbal social interaction and communication. OBJECTIVE: To evaluate the psychometric attributes of a Spanish version of the autism domain of the Autism-Tics, AD/HD and other Comorbidities Inventory (A-TAC) scale for ASD screening. MATERIAL AND METHODS: A total of 140 subjects (43% male, 57% female) aged 6-16, with ASD (n=15), Mental Retardation (n=40), Psychiatric Illness (n=22), Tics (n=12) and controls (n=51), were included for ASD screening. The predictive validity, acceptability, scale assumptions, internal consistency, and precision were analysed. RESULTS: The internal consistency was high (α=0.93), and the standard error was adequate (1.13 [95% CI, -1.08 a 3.34]). The mean scores of the Autism module were higher in patients diagnosed with ASD and mental disability compared to the rest of the patients (P<.001). The area under the curve was 0.96 for the ASD group. CONCLUSION: The autism domain of the A-TAC scale seems to be a reliable, valid and precise tool for ASD screening in the Spanish school population.