Validación del M-CHAT-R/F como instrumento de tamizaje para detección precoz en niños con trastorno del espectro autista

Coelho-Medeiros, María Elisa; Bronstein, Jonathan; Aedo, Karina; Pereira, Jaime A.; Arraño, Verónica; Pérez, Carolina Alejandra; Valenzuela, Patricio; Moore, Rosario; Garrido, Isabel; Bedregal, Paula

doi:10.32641/rchped.v90i5.703

“…These differences can also be seen when comparing studies that have used other tools to measure autistic traits in Chilean children. For example, mean scores of M-CHAT-R/F (M=0.81, SD=-1.21) in a sample of Chilean children (46) were significantly higher than those reported in a sample of U.S. children (28) with a small difference in effect size (M=0.4, SD=0.27; calculated d=-0.37).…”

Section: Discussionmentioning

confidence: 62%

The Quantitative Checklist for Autism in Toddlers (Q-CHAT): A preliminary psychometric study in Chile

Gatica-Bahamonde¹,

Alarcón²,

Am³

et al. 2021

Preprint

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The aim of this study was to examine the psychometric properties of an adapted version of the Quantitative Checklist for Autism in Toddlers (Q-CHAT), an early screening tool that quantifies autistic traits dimensionally, in a community sample of Chilean children aged 18-24 months. An intentional non-probabilistic sampling was used. All primary caregivers of children aged 18-24 months who attended health check-up at four primary care clinics in Chile's Araucanía region during the study period were invited to participate. One hundred and eighty-eight toddlers were screened. Evidence of construct validity was determined through Exploratory Factor Analysis (EFA), evidence of convergent validity with the Modified Checklist for Autism in Toddlers, Revised with Follow-Up (M-CHAT-R/F), and evidence of reliability through internal consistency and test-retest. The EFA showed a two-factor structure, which explained 42.2 % of the variance: “Restrictive and Repetitive Patterns” (factor 1), and “Communication and Social Interaction” (factor 2). The total Q-CHAT scores correlated positively and significantly with the total M-CHAT-R/F scores (r=0.59, p<0.01) with a large effect size. Internal consistency was acceptable for the scale in general (α=0.74), acceptable for factor 1 (α = 0.76) and good (α=0.85) for factor 2. Regarding test-retest stability, the intraclass correlation coefficient was good (ICC=0.86, p<0.001). In terms of the factor structure evidenced by the EFA, the two factors are theoretically consistent with the current diagnostic criteria of the DSM-5. The evidence of validity and reliability of Q-CHAT is encouraging when considering its use as an early detection tool in Chile.

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“…These differences can also be seen when comparing studies that have used other tools to measure autistic traits in Chilean children. For example, mean scores of M-CHAT-R/F (M=0.81, SD=-1.21) in a sample of Chilean children (46) were significantly higher than those reported in a sample of U.S. children (28) with a small difference in effect size (M=0.4, SD=0.27; calculated d=-0.37).…”

Section: Discussionmentioning

confidence: 62%

“…The Chilean version of M-CHAT-R/F was used (46). M-CHAT-R/F is a 2-stage autism screening scale with 20 items for parents of children aged 16 to 30 months.…”

Section: Instrumentsmentioning

confidence: 99%

The Quantitative Checklist for Autism in Toddlers (Q-CHAT): A preliminary psychometric study in Chile

Gatica-Bahamonde¹,

Alarcon²,

Fadol³

et al. 2021

Preprint

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The aim of this study was to examine the psychometric properties of an adapted version of the Quantitative Checklist for Autism in Toddlers (Q-CHAT), an early screening tool that quantifies autistic traits dimensionally, in a community sample of Chilean children aged 18-24 months. An intentional non-probabilistic sampling was used. All primary caregivers of children aged 18-24 months who attended health check-up at four primary care clinics in Chile's Araucanía region during the study period were invited to participate. One hundred and eighty-eight toddlers were screened. Evidence of construct validity was determined through Exploratory Factor Analysis (EFA), evidence of convergent validity with the Modified Checklist for Autism in Toddlers, Revised with Follow-Up (M-CHAT-R/F), and evidence of reliability through internal consistency and test-retest. The EFA showed a two-factor structure, which explained 42.2 % of the variance: “Restrictive and Repetitive Patterns” (factor 1), and “Communication and Social Interaction” (factor 2). The total Q-CHAT scores correlated positively and significantly with the total M-CHAT-R/F scores (r=0.59, p<0.01) with a large effect size. Internal consistency was acceptable for the scale in general (α=0.74), acceptable for factor 1 (α = 0.76) and good (α=0.85) for factor 2. Regarding test-retest stability, the intraclass correlation coefficient was good (ICC=0.86, p<0.001). In terms of the factor structure evidenced by the EFA, the two factors are theoretically consistent with the current diagnostic criteria of the DSM-5. The evidence of validity and reliability of Q-CHAT is encouraging when considering its use as an early detection tool in Chile.

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“…Evaluación observacional estandarizada y semiestructurada para síntomas de TEA, compuesta por 5 módulos que se utilizan según la edad cronológica y el nivel de lenguaje del niño/a. En este estudio se utilizó la versión española del instrumento y se administraron los dos primeros módulos (T y 1) como complemento de la evaluación clínica, por ser este instrumento considerado gold standard con fines de investigación 12 .…”

Section: Autism Diagnostic Observation Schedule -Second Edition (Ados-2)unclassified

Estimación de la prevalencia de trastorno del Espectro Autista en población urbana chilena

Yáñez

¹

,

Maira

²

,

Elgueta

³

et al. 2021

Andes pediatr

15

0

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La prevalencia del Trastorno del Espectro Autista (TEA) ha aumentado, variando entre 0,5 y 1% alrededor del mundo. Se desconoce la prevalencia de TEA en Chile.Objetivo: Estimar la prevalencia de Trastorno del Espectro Autista en 2 comunas urbanas de Santiago de Chile.Sujetos y Método: Estudio epidemiológico transversal. Participaron 272 niños entre 18-30 meses que asistían a control sano en dos Centros de Salud Familiar de dos comunas urbanas de la capital. Se utilizó un muestreo consecutivo y se excluyeron los niños que ya estaban siendo controlados por neurología. Se realizó un tamizaje mediante el Cuestionario de Autismo en Niños - Modificado (MCHAT). Los niños con MCHAT alterado fueron evaluados por neuropediatra en el Hospital Clínico San Borja Arriarán y diagnosticados con Trastorno del Espectro Autista de acuerdo a criterio clínico. Se administró la Escala de Observación para el Diagnóstico del Autismo - Segunda Versión (ADOS-2) como complemento diagnóstico. Se estimó la prevalencia de Trastorno del Espectro Autista con intervalo de confianza a 95%.Resultados: 44 niños tuvieron M-CHAT alterado; de ellos 5 fueron diagnosticados clínicamente con Trastorno del Espectro Autista. Se obtuvo una prevalencia de Trastorno del Espectro Autista de 1,95% (IC95% 0,81-4,63), con una distribución por sexo de 4 niños por 1 niña.Conclusiones: Esta es la primera estimación de prevalencia de Trastorno del Espectro Autista en dos comunas de Santiago, Chile. Se obtuvo una alta prevalencia de esta condición, lo que deja en evidencia la necesidad de obtener recursos para el abordaje multidisciplinario precoz de estos pacientes.

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Validación del M-CHAT-R/F como instrumento de tamizaje para detección precoz en niños con trastorno del espectro autista

Cited by 23 publications

References 22 publications

The Quantitative Checklist for Autism in Toddlers (Q-CHAT): A preliminary psychometric study in Chile

The Quantitative Checklist for Autism in Toddlers (Q-CHAT): A preliminary psychometric study in Chile

The Quantitative Checklist for Autism in Toddlers (Q-CHAT): A preliminary psychometric study in Chile

Estimación de la prevalencia de trastorno del Espectro Autista en población urbana chilena

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