Johnston County ADHD Study: Environment… | Clinical Trial

Key information

Conditions

Attention-Deficit Hyperactivity Disorder Attention Deficit Disorder with Hyperactivity Attention Deficit and Disruptive Behavior Disorders Behavior Communication Disorders Learning Disabilities Mental Disorders Nervous System Diseases Neurobehavioral Manifestations Neurodevelopmental Disorders Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

8 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

NIEHS, Research Triangle Park

Research Triangle Park, North Carolina, 27709, United States

About this study

We propose a population-based case-control study among 7000 elementary school children in semi-rural Johnston County, NC. Teachers will complete a screening form on each child. Controls will be randomly selected. Mothers of potential cases and controls will be interviewed by telephone about their child's symptoms of ADHD and exposure history, their family history of ADHD, and their reproductive and exposure history. Children's shed baby teeth will be analyzed for lead. Mothers will complete brief parenting scales and the Child Behavior Checklist. School records will be collected. The study goals are to identify risk factors for ADHD including preterm delivery and childhood lead exposure.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

INCLUSION CRITERIA:

During the first phase of the study, all children will be screened by the homeroom teacher, EXCEPT for those students in certain self-contained classrooms. Self-contained classrooms for students with an IQ less than 70 or autism will be omitted from the screening. In the second phase of the study, children designated as "LEP", or Low English Proficiency, will be excluded from the study.

Sponsors and collaborators

Lead sponsor

National Institute of Environmental Health Sciences (NIEHS)

Nih

Registry information

Official study title

Johnston County ADHD Study: Environmental, Reproductive and Familial Risk Factors for Attention-Deficit Hyperactivity Disorder (ADHD)

Important dates

Study start: 1997
Study completion: 2007
First posted: Jun 21, 2006
Registry last updated: Jul 2, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed