NCT02557477

Brief Summary

The primary objective was to assess whether supplementation of Omega 3/6 fatty acids improves mainstream schoolchildren's reading ability. The secondary objective was to assess whether Omega 3/6 improves cognitive functions such as attention, memory, learning, language/communication, problem solving and social ability.This was a 3-month randomised, double-blind, placebo-controlled study followed by one-way crossover (placebo to active treatment) for an additional 3 months. Mainstream schoolchildren aged 9-10 years were initially randomised to receive three Omega 3/6 capsules twice daily or identical placebo. All outcome measures were assessed at baseline, 3 months and 6 months. The primary outcome measure was the LOGOS test, a comprehensive test battery for evaluating reading abilities. Secondary outcome measures were the parent-rated Attention Deficit Hyperactivity Disorder (ADHD) Rating Scale-IV, 5-15 scale (domains of learning, memory, language/communication and problem solving); Social and Communication Disorders Checklist (to evaluate social ability)

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
154

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Mar 2010

Typical duration for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 1, 2010

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2012

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2012

Completed
2.8 years until next milestone

First Submitted

Initial submission to the registry

September 13, 2015

Completed
10 days until next milestone

First Posted

Study publicly available on registry

September 23, 2015

Completed
Last Updated

December 27, 2021

Status Verified

December 1, 2021

Enrollment Period

2.8 years

First QC Date

September 13, 2015

Last Update Submit

December 23, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in reading ability

    LOGOS test: Computerized test of several functions implicated in reading ability

    0, 3 and 6 months

Secondary Outcomes (6)

  • Change in ADHD symptom severity

    0, 3 and 6 months

  • Change in learning ability

    0,3 and 6 months

  • Change in memory ability

    0, 3 and 6 months

  • Change in language/communication ability

    0,3 and 6 months

  • Change in problem solving ability

    0,3 and 6 months

  • +1 more secondary outcomes

Study Arms (2)

Active

ACTIVE COMPARATOR

Participants received 3 capsules of Omega 3/6 fatty acids twice daily

Dietary Supplement: Omega 3/6 fatty acids

Placebo

PLACEBO COMPARATOR

Participants received 3 capsules of identical placebo (palm oil) twice daily

Dietary Supplement: Placebo

Interventions

Omega 3/6 fatty acidsDIETARY_SUPPLEMENT

Three Omega 3/6 capsules twice daily

Active
PlaceboDIETARY_SUPPLEMENT

Three placebo capsules twice daily

Placebo

Eligibility Criteria

Age9 Years - 10 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • mainstream schoolchildren in the 3rd school year (aged 9-10 years).

You may not qualify if:

  • continuous supplementation of Omega-3 fatty acids for periods longer than 1 month during the previous year
  • significant medical conditions (e.g. diabetes, epilepsy)
  • intellectual disability
  • attention-deficit hyperactivity disorder (ADHD) diagnosis, psychoactive medication, or substance use.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (1)

  • Johnson M, Fransson G, Ostlund S, Areskoug B, Gillberg C. Omega 3/6 fatty acids for reading in children: a randomized, double-blind, placebo-controlled trial in 9-year-old mainstream schoolchildren in Sweden. J Child Psychol Psychiatry. 2017 Jan;58(1):83-93. doi: 10.1111/jcpp.12614. Epub 2016 Aug 22.

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 13, 2015

First Posted

September 23, 2015

Study Start

March 1, 2010

Primary Completion

December 1, 2012

Study Completion

December 1, 2012

Last Updated

December 27, 2021

Record last verified: 2021-12