31 mai 2017

Prévalence du "trouble du spectre de l'autisme" et des symptômes autistes dans une cohorte scolaire d'enfants à Kolkata, en Inde

Aperçu: G.M.
Malgré le fait qu'elle comprend ~ 18% de la population mondiale, l'Inde n'a pas encore une estimation de la prévalence de l'autisme.
Cette étude a été réalisée pour estimer la prévalence de l'autisme dans une population sélectionnée d'écoliers en Inde. 
L'estimation pondérée des scores SCQ supra-seuil était de 3,54% (CI: 2,88-4,3%). L'estimation de la prévalence pondérée des scores positifs (pour le spectre de l'autisme plus large + TSA+ autisme) était de 0,23% (0,07-0,46%). Comme on sait que 20% des enfants dans cet état sont hors du système scolaire, la prévalence de la TSA est susceptible d'être plus élevée dans ce groupe, cette estimation est susceptible de représenter la limite inférieure de la prévalence réelle.

Autism Res. 2017 May 25. doi: 10.1002/aur.1812.

Prevalence of autism spectrum disorder and autistic symptoms in a school-based cohort of children in Kolkata, India

Author information

1
Centre for Autism, School of Psychology and Clinical Language Sciences, University of Reading, Reading, UK.
2
Department of Psychology, Ben Gurion University of the Negev, Beer-Sheva, Israel.
3
The Com DEALL Trust, Bangalore, Karnataka, India.
4
School of Social Sciences, Nottingham Trent University, Nottingham, UK.
5
Creating Connections, Kolkata, West Bengal, India.
6
Graduate School of Creative Art Therapies, University of Haifa, Haifa, Israel.

Abstract

Despite housing ∼18% of the world's population, India does not yet have an estimate of prevalence of autism. This study was carried out to estimate the prevalence of autism in a selected population of school-children in India. N = 11,849 children (mean age = 5.9 [SD = 1.3], 39.5% females) were selected from various school types from three boroughs in Kolkata, India. Parents/caregivers and teachers filled in the social and communication disorders checklist (SCDC). Children meeting cutoff on parent-reported SCDC were followed up with the social communication questionnaire (SCQ). SCQ-positive children were administered the autism diagnostic observation schedule (ADOS). Teacher report on SCDC was available on all 11,849 children. Parent-report SCDC scores were obtained for 5,947 children. Mean scores on teacher SCDC were significantly lower than parent SCDC. Out of 1,247 SCDC-positive children, 882 answered the SCQ, of whom 124 met the cutoff score of 15. Six of these children met criteria for autism, autism spectrum disorder (ASD), or broader autism spectrum on the ADOS. The weighted estimate of supra-threshold SCQ scores was 3.54% (CI: 2.88-4.3%). The weighted prevalence estimate of positive scores (for broader autism spectrum + ASD + autism) was 0.23% (0.07-0.46%). As ∼20% children in this state are known to be out of the school system, and ASD prevalence is likely to be higher in this group, this estimate is likely to represent the lower-bound of the true prevalence. This study provides preliminary data on the prevalence of broader-spectrum autism and supra-threshold autistic traits in a population sample of school children in Eastern India. Autism Res 2017. ©2017 The Authors Autism Research published by Wiley Periodicals, Inc. on behalf of International Society for Autism Research.
PMID: 28544637
DOI: 10.1002/aur.1812

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