Age of walking and intellectual ability in autism spectrum disorder and other neurodevelopmental disorders: a population-based study.

ABSTRACT:

Background

Delayed walking is common in intellectual disability (ID) but may be less common when ID occurs with autism spectrum disorder (ASD). Previous studies examining this were limited by reliance on clinical samples and exclusion of children with severe motor deficits.

Objective

To examine in a population-based sample if age of walking is differentially related to intellectual ability in children with ASD versus other neurodevelopmental disorders (NDD).

Methods

Participants were from the nested Autism Birth Cohort Study of the Norwegian Mother, Father and Child Cohort Study (MoBa). Cox proportional hazards regression assessed if diagnosis (ASD n = 212 vs. NDD n = 354), continuous nonverbal IQ, and their interaction, were associated with continuous age of walking.

SUBMITTER: Havdahl A 

PROVIDER: S-EPMC8236490 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature