The effect of iodine supplementation on cognition in school-aged children

Randomized, double-blind, placebo-controlled trial investigating the effect of iodine supplementation on cognition in school-aged children

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12609001026213

Acronym

I-Learn Study

Enrollment

350

Registered

2009-11-26

Start date

2010-05-03

Completion date

Unknown

Last updated

2020-01-13

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

Conditions

None listed

Brief summary

The study aims to examine the effect of iodine supplementation on cognition in mildly iodine-deficient school-aged children The research hypothesis is that the cognitive test scores of children taking a daily iodine supplement will improve relative to baseline performance and compared to children taking a daily placebo over the 28-week trial period

Interventions

A flavoured, chewable tablet containing 120 micrograms of iodine to be taken daily for 28 weeks

Study design

Allocation

Randomised controlled trial

Intervention model

Parallel

Primary purpose

Prevention

Masking

Blinded (masking used)

Eligibility

Sex/Gender

All

Age

8 Years to 12 Years

Healthy volunteers

Yes

Inclusion criteria

Mildly iodine-deficient (i.e., a median urinary iodine concentration level of 50-99 micrograms per litre in the study population) No history of thyroid disease Not taking iodine-containing supplements

Exclusion criteria

History of thyroid disease; Taking iodine-containing supplements

Outcome results