Autism spectrum disorder: updated prevalence and comparison of two birth cohorts in a nationally representative Australian sample.

ABSTRACT:

Objectives

This study aimed to (1) provide an update on the prevalence of parent-reported autism spectrum disorder (ASD) diagnosis and new information about teacher-reported ASD in two nationally representative Australian cohorts at ages 10-11 years, (2) examine differences in cohort demographic and clinical profiles and (3) compare the prevalence of teacher-reported ASD and any changes in categorisation over time across the cohorts.

Design

Secondary analyses were undertaken using data from the Longitudinal Study of Australian Children (LSAC).

Participants

Children were recruited at kindergarten age (K cohort; birth year 1999/2000) and birth (B cohort; birth year 2003/2004), with follow-up of every 2  years for six waves.

Primary outcome measures

Parent-reporte

SUBMITTER: May T 

PROVIDER: S-EPMC5623420 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature