Skip to content

Omega Tots Long Term Follow-up

Long-term Effects and Safety of DHA+AA Supplementation in Toddlerhood for Children Born Preterm

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05191823
Enrollment
377
Registered
2022-01-14
Start date
2021-12-01
Completion date
2027-06-30
Last updated
2026-08-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Child Development, Preterm Birth

Brief summary

This is a continuation study to the Omega Tots trial (NCT01576783). The purpose of this study is to follow-up with participants of the original study to determine the long-term effect a daily fatty acid dietary supplement taken during toddlerhood might have on children born preterm now that they are 8.5-10.5 years old.

Detailed description

The overall objective with the present study is to determine the long-term effects of docosahexaenoic acid (DHA) plus arachidonic acid (AA) supplementation on general cognitive ability, language, and executive function, and to examine genetic explanations for treatment effects, through one comprehensive study visit with children and parents from the Omega Tots trial cohort (NCT01576783).

Interventions

200 mg DHA+ 200 mg AA per day for 6 months

DIETARY_SUPPLEMENTPlacebo

400 mg corn oil per day for 6 months

Sponsors

Sarah Keim
Lead SponsorOTHER
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
8 Years to 10 Years
Healthy volunteers
No

Inclusion criteria

* Previous participation in Omega Tots (NCT01576783). * Current age of 8 years, 180 days to 10 years, 180 days.

Exclusion criteria

* Child in custody of children's services for their window of eligibility

Design outcomes

Primary

MeasureTime frameDescription
General Cognitive Ability Score(Differential Ability Scales, Second Edition-DAS-II)A single study visit when the child is between 8.5 years to 10.5 yearsDifferential Ability Scales-II General Conceptual Ability assessment is a measure of general cognitive ability and is used to assess and identify children's cognitive strengths and weaknesses. The general cognitive ability score has a range from 30 to 170 (mean=100; SD=15). A low score indicates poor performance, and a high score indicates best performance.
Core Language Score (Clinical Evaluation of Language Fundamentals, Fifth Edition-CELF-5)A single study visit when the child is between 8.5 years to 10.5 yearsClinical evaluation of Language Fundamentals, 5th edition core tests is a comprehensive measure of language and can assess children's written and oral language skills, as well as their reading comprehension. The core language score has a range from 30 to 170 (mean=100; SD=15). A low score indicates poor performance, and a high score indicates best performance.
Executive Function (NIH Toolbox)A single study visit when the child is between 8.5 years to 10.5 yearsThe NIH Toolbox Cognition Battery is a multi-dimensional set of brief measures assessing cognitive function. The Flanker, Dimensional Card Sort, and Pattern Comparison subtests measure executive function, processing speed, and attention. Standard scores have a range from 30 to 170 (mean=100; SD=15). A low score indicates poor performance, and a high score indicates best performance..

Secondary

MeasureTime frameDescription
Grooved Pegboard TaskA single study visit when the child is between 8.5 years to 10.5 yearsThe Grooved Pegboard task measures eye-hand coordination and motor speed by requiring children to insert pegs into a board. The score is the time to place the pegs. If the child reaches the time limit of 3 minutes, then the score is the number of pegs placed. A faster time and lower number of pegs dropped is indicative of better performance.
Select Subtest From the Wechsler Intelligence Scales for Children, Fifth Edition (WISC-V)A single study visit when the child is between 8.5 years to 10.5 yearsThe Weschler Intelligence Scales for Children-V Digit Span and Picture Span subtests assess working memory. The working memory index composite score has a range from 30-170 (mean=100; SD=15). A low score indicates poor performance, and a high score indicates best performance.
Select Subtests From the Kaufman Test of Educational Achievement, Third Edition (KTEA-3)A single study visit when the child is between 8.5 years to 10.5 yearsThe Kaufman Test of Educational Achievement-3 is an assessment of key academic skills. The Letter and Word Recognition, Math Computation, Object Naming Facility, and Associative Fluency Subtests measure children's reading, math, and written language skills. The standard score has a range from 30-170 (mean=100; SD=15). A low score indicates poor performance, and a high score indicates best performance.
Anthropometrics-Body Composition (Height)A single study visit when the child is between 8.5 years to 10.5 yearsTo assess children's body composition, height (in centimeters) is measured. This is converted to a z score for age and sex based on Child Growth Standards from the World Health Organization. The z score indicates the number of standard deviations away from the mean. A z score of 0 is equal to the mean of a reference population (children the same age and sex). Values less than 0 indicate values lower than the reference population, while values greater than 0 indicate values higher than the reference population.
Anthropometrics-Body Composition (Weight)A single study visit when the child is between 8.5 years to 10.5 yearsTo assess children's body composition, weight (in kilograms) is measured. This is converted to a z score for age and sex based on Child Growth Standards from the World Health Organization. The z score indicates the number of standard deviations away from the mean. A z score of 0 is equal to the mean of a reference population (children the same age and sex). Values less than 0 indicate values lower than the reference population, while values greater than 0 indicate values higher than the reference population.
Anthropometrics-AdiposityA single study visit when the child is between 8.5 years to 10.5 yearsTo assess children's adiposity, a bioelectric impedance is used to measure body fat percent. Child's height and weight will be combined to report BMI (kg/m\^2). These measurements are converted to a z score for age and sex based on Child Growth Standards from the World Health Organization. The z score indicates the number of standard deviations away from the mean. A z score of 0 is equal to the mean of a reference population (children the same age and sex). Values less than 0 indicate values lower than the reference population, while values greater than 0 indicate values higher than the reference population.
Behavior Rating Inventory of Executive Function, 2nd Edition (BRIEF-2)A single study visit when the child is between 8.5 years to 10.5 yearsThe Behavior Rating Inventory of Executive Function, 2nd ed., is completed by the child's caregiver and teacher to measure a range of executive functioning capabilities in children. The BRIEF-2 yields nine clinical scales that measure various aspects of executive function plus three broad indices: behavioral regulation, emotion regulation, and cognitive regulation. Scores are summed to obtain a Global Executive Composite Score that will be expressed as a t score (range= \[35-90\]; (mean=50; SD=10), where a higher score indicates greater dysregulation .
Select Subscales From the Teacher Report Form 6-18A single study visit when the child is between 8.5 years to 10.5 yearsThe Teacher Report Form (syndrome and DSM-Oriented subscales) is completed by the child's teacher to reflect on the child's behavior in the previous six months. Scores are summed to provide a total problems score. Scores are also computed to measure the following subscales: internalizing problems, externalizing problems, anxious/depressed, withdrawn/depressed, somatic complaints, social problems, thought problems, attention problems, rule-breaking behavior, aggression behavior, affective problems, anxiety problems, somatic problems, attention deficit/hyperactivity problems, oppositional defiant problems, conduct problems. Scores will be expressed as a t-score (range= \[33-100\]; mean=50; SD=10), where a lower score indicates a more optimal outcome.
Child Behavior Checklist 6-18 (CBCL) - CompetenceA single study visit when the child is between 8.5 years to 10.5 yearsThe Child Behavior Checklist is completed by the child' caregiver to reflect their child's behavior in the previous six months. Scores were summed to provide total competence score. Total competence scores will be expressed as a t-score (range= \[20-100\]; mean=50; SD=10), where a higher score reflects a more optimal outcome.
National Survey of Children's Health Module - Learning DisabilityA single study visit when the child is between 8.5 years to 10.5 yearsThe National Survey of Children's Health module captures child developmental and behavioral diagnoses and other major diagnoses via parent report . A binary variable will be formed to indicate if a child has been diagnosed with each condition or not (yes, no).
Emotion Regulation Checklist - Emotion RegulationA single study visit when the child is between 8.5 years to 10.5 yearsThe Emotion Regulation Checklist is completed by the child's caregiver to measure child's ability to manage their emotions. Scores are grouped and summed to yield Emotion Regulation scale (range=10-40). Higher scores on the Emotion Regulation scale indicates more ability to regulate
NIH Toolbox Friendship Fixed FormA single study visit when the child is between 8.5 years to 10.5 yearsThe NIH Toolbox Friendship (Ages 8-17) Fixed Form is a 5-item questionnaire that measures peer relationships and assesses the quality of relationships with friends and other acquaintances over the past month. Scores will be expressed as a t-score (range= \[16-68\]; mean=50; SD=10), where a higher score indicates stronger peer relationships.
NIH Toolbox Positive Peer Interaction Parent Report Fixed FormA single study visit when the child is between 8.5 years to 10.5 yearsThe NIH Toolbox Positive Peer Interaction Form (Ages 3-12) is a 4-item questionnaire that measures child peer relationships via parent report. Scores will be expressed as a t-score (range= \[-8-63\] ; mean=50; SD=10), where a higher score indicates stronger peer relationships.
Child Sleep Habits Questionnaire-abbreviated MeasureA single study visit when the child is between 8.5 years to 10.5 yearsThe Child Sleep Habits Questionnaire-abbreviated measures child sleep pattern and behaviors via parent report. Parents are asked to report on the child's bedtime behavior, sleep duration, and behavior during sleep. Scores are summed to give the total sleep disturbance score (range 33-99). Scores are also grouped and summed to yield eight subscales that measure different aspects of sleep. A higher score is indicative of more sleep problems .
Child Behavior Checklist 6-18 (CBCL) - ProblemsA single study visit when the child is between 8.5 years to 10.5 yearsThe Child Behavior Checklist is completed by the child' caregiver to reflect their child's behavior in the previous six months. Scores were summed to provide problem scores. T Problem scores will be expressed as a t-score (range= \[25,100\]; mean=50; SD=10), where a lower score reflects a more optimal outcome.
National Survey of Children's Health Module - Developmental DelayA single study visit when the child is between 8.5 years to 10.5 yearsThe National Survey of Children's Health module captures child developmental and behavioral diagnoses and other major diagnoses via parent report . A binary variable will be formed to indicate if a child has been diagnosed with each condition or not (yes, no).
National Survey of Children's Health Module - INtellectual DisabilityA single study visit when the child is between 8.5 years to 10.5 yearsThe National Survey of Children's Health module captures child developmental and behavioral diagnoses and other major diagnoses via parent report . A binary variable will be formed to indicate if a child has been diagnosed with each condition or not (yes, no).
National Survey of Children's Health Module - Speech or Other Language DisorderA single study visit when the child is between 8.5 years to 10.5 yearsThe National Survey of Children's Health module captures child developmental and behavioral diagnoses and other major diagnoses via parent report . A binary variable will be formed to indicate if a child has been diagnosed with each condition or not (yes, no).
National Survey of Children's Health Module - Behavioral or Conduct ProblemsA single study visit when the child is between 8.5 years to 10.5 yearsThe National Survey of Children's Health module captures child developmental and behavioral diagnoses and other major diagnoses via parent report . A binary variable will be formed to indicate if a child has been diagnosed with each condition or not (yes, no).
Emotion Regulation Checklist - Lability/NegativityA single study visit when the child is between 8.5 years to 10.5 yearsThe Emotion Regulation Checklist is completed by the child's caregiver to measure child's ability to manage their emotions. Scores are grouped and summed to yield a Lability/Negativity (range=14-56) scale. Higher scores on the Lability/Negativity scale reflect greater dysregulation .

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORSarah Keim, PhD

Nationwide Children's Hospital

Baseline characteristics

Characteristic
Age, Continuous9.3 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
52 Participants
Race (NIH/OMB)
More than one race
33 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
236 Participants
Region of Enrollment
United States
188 participants
Sex: Female, Male
Female
84 Participants
Sex: Female, Male
Male
90 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 0
other
Total, other adverse events
0 / 0
serious
Total, serious adverse events
0 / 0

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 12, 2026