Prevalence and Recurrence of Pica Behaviors in Early Childhood: Findings from the ALSPAC Birth Cohort

Author:

Papini Natalie M.ORCID,Bulik Cynthia M.ORCID,Chawner Samuel JRAORCID,Micali NadiaORCID

Abstract

AbstractObjectivePica has been largely understudied in general population samples. Pica occurs most often in childhood and appears more prevalent in individuals with autism and developmental delays (DD). Pica occurrence in the general population is poorly understood due to few epidemiological studies.MethodData on 10,109 caregivers from the Avon Longitudinal Study of Parents and Children (ALSPAC) study who reported pica behavior at 36, 54, 66, 77, and 115 months on their child were included. Autism was obtained through clinical and education records, while DD was derived from the Denver Developmental Screening Test.ResultsA total of 312 parents reported pica behaviors in their child. Of these, 19.55% reported pica at least at two waves (n=61). Pica was most common at 36 months (N=226; 2.29%) and decreased as children aged. A significant association was found between pica and autism at all five waves (p < .001). There was a significant relationship between pica and DD, with individuals with DD more likely to experience pica than those without DD at 36 (p = .01), and 54 (p < .001), 65 (p=.04), 77 (p <.001), and 115 months (p=.006). Exploratory analyses examined pica behaviors with broader eating difficulties and child body mass index.DiscussionPica is an uncommon behavior in childhood; however, children with DD or autism may benefit from pica screening and diagnosis between ages 36-115 months. Children who exhibit undereating, overeating, and food fussiness may also engage in pica behaviors.

Publisher

Cold Spring Harbor Laboratory

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