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Phys Ther. 2018 Apr 1;98(4):251-259. doi: 10.1093/ptj/pzy006.

Associations of Gross Motor Delay, Behavior, and Quality of Life in Young Children With Autism Spectrum Disorder.

Author information

1
Children's Hospital Colorado, Parker Therapy Care, 19284 Cottonwood Dr, Ste 101, Parker, CO 80138 (USA).
2
University of Colorado Anschutz Medical Campus, Aurora, Colorado.
3
Biostatistics Center, Massachusetts General Hospital, Boston, Massachusetts.
4
University of Colorado Anschutz Medical Campus.
5
Developmental Pediatrics, University of Colorado Anschutz Medical Campus.

Abstract

Background:

Young children with autism spectrum disorder (ASD) often have gross motor delays that may accentuate problem daytime behavior and health-related quality of life (QoL).

Objective:

The objective of this study was to describe the degree of gross motor delays in young children with ASD and associations of gross motor delays with problem daytime behavior and QoL. The primary hypothesis was that Gross motor delays significantly modifies the associations between internalizing or externalizing problem daytime behavior and QoL.

Design:

This study used a cross-sectional, retrospective analysis.

Methods:

Data from 3253 children who were 2 to 6 years old and who had ASD were obtained from the Autism Speaks Autism Treatment Network and analyzed using unadjusted and adjusted linear regression. Measures included the Vineland Adaptive Behavior Scales, 2nd edition, gross motor v-scale score (VABS-GM) (for Gross motor delays), the Child Behavior Checklist (CBCL) (for Problem daytime behavior), and the Pediatric Quality of Life Inventory (PedsQL) (for QoL).

Results:

The mean VABS-GM was 12.12 (SD = 2.2), representing performance at or below the 16th percentile. After adjustment for covariates, the internalizing CBCL t score decreased with increasing VABS-GM (β = - 0.64 SE = 0.12). Total and subscale PedsQL scores increased with increasing VABS-GM (for total score: β = 1.79 SE = 0.17; for subscale score: β = 0.9-2.66 SE = 0.17-0.25). CBCL internalizing and externalizing t scores decreased with increasing PedsQL total score (β = - 0.39 SE = 0.01; β = - 0.36 SE = 0.01). The associations between CBCL internalizing or externalizing t scores and PedsQL were significantly modified by VABSGM (β = - 0.026 SE = 0.005]; β = - 0.019 SE = 0.007).

Limitations:

The study lacked ethnic and socioeconomic diversity. Measures were collected via parent report without accompanying clinical assessment.

Conclusions:

Cross motor delay was independently associated with Problem daytime behavior and QoL in children with ASD. Gross motor delay modified the association between Problem daytime behavior and QoL. Children with ASD and co-occurring internalizing Problem daytime behavior had greater Gross motor delays than children without internalizing Problem daytime behavior; therefore, these children may be most appropriate for early physical therapist evaluation.

PMID:
29325143
DOI:
10.1093/ptj/pzy006

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