EUthyroid2: the Next Step Towards the Elimination of Iodine Deficiency and Preventable Iodine-related Disorders in Europe

NCT ID: NCT06769009

Last Updated: 2025-02-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

1000 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-11-18

Study Completion Date

2025-12-31

Brief Summary

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In EUthyroid2 intervention measures are to be developed, implemented in ambulatory care settings and evaluated to effectively raise awareness for the risks of iodine deficiency among young women (18-24 years) in three European countries (Norway, Poland, UK) as well as Bangladesh and Pakistan. A cluster-randomized controlled trial with three points of measurements will be applied in each participating country. The intervention will be adapted to the different contextual characteristics of the implementation sites. A process evaluation with a convergent parallel mixed methods design will be conducted. For this, participants and healthcare professionals will be surveyed and semi-structured interviews will be carried out.

Detailed Description

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BACKGROUND: Iodine deficiency (ID) is a leading risk factor for the development of thyroid disorders, of which in particular women are affected. During pregnancy, ID can increase the risk of developmental disorders in the offspring, however, it is considered as one of the most preventable causes of mental impairment in children. Therefore, the EUthyroid2 project aims to contribute to the prevention of ID and associated symptom and disease burden in adolescence and young women in Europe and beyond.

AIM: An educational intervention is to be developed, implemented in ambulatory care settings and evaluated to effectively raise awareness for the risks of ID among young women (18-24 years) in three European countries (Norway, Poland, UK) as well as Bangladesh and Pakistan.

METHODS: A cluster-randomised controlled trial is to be conducted in each of the five countries. 10 clusters per country (5 intervention group clusters and 5 control group clusters) are planned to achieve a final sample size of 200 study participants per implementing country with one baseline (before the intervention) and two follow-up measurements (2-4 weeks and 6-8 months after the intervention). In all, 1000 participants are to be recruited and data for all measurement points collected. Due to differences in the healthcare systems, the ambulatory care units, where the intervention will be implemented, may vary across the countries. Before recruiting the women, the healthcare professionals who carry out the intervention will receive a specially designed training program. To assure the intervention's functionality and effectiveness, recommendations for the development of complex interventions, appropriate theories and frameworks will be considered and a context analysis will be conducted. The primary outcome of the study is iodine awareness and knowledge measured by a newly developed questionnaire. Other outcomes includes measurement of iodine status (urinary iodine concentration), intake of dietary iodine sources (measured by a food frequency questionnaire), and iodine related behaviours. Sociodemographic characteristics and general dietary habits will also be measured. Descriptive analyses for all variables will be performed. Intervention groups will be compared to control groups over time to test effectiveness. Subgroup and country-specific analyses will also be computed. A process evaluation will be conducted to evaluate the implementation process with a convergent parallel mixed methods design. For this, healthcare professionals in the ambulatory care settings and the women who received the intervention will be invited to participate in an online survey. Further, ca. 20-30 semi-structured interviews will be conducted with women and healthcare professionals.

CONCLUSION / OUTLOOK: The project results may support health authorities across countries to implement effective measures to reduce ID and associated risks. This may sustainably reduce the disease burden induced by ID for young women, pregnant women and their offspring.

Conditions

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Iodine Deficiency

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Cluster-randomized controlled trial
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Intervention Group

Group Type EXPERIMENTAL

Educational intervention measures on iodine, iodine deficiency and iodine intake

Intervention Type BEHAVIORAL

The intervention consist of an educational intervention which will educate the young women on the importance of iodine, the consequences of iodine deficiency, dietary iodine sources and the iodine in pregnancy. The educational intervention consist of four intervention components: an iodine feedback tool, and educational iodine conversation with a healthcare professional, an iodine factsheet and an iodine video. The healthcare professionals who carry out the educational conversation will receive a specially designed training program.

Control group

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Educational intervention measures on iodine, iodine deficiency and iodine intake

The intervention consist of an educational intervention which will educate the young women on the importance of iodine, the consequences of iodine deficiency, dietary iodine sources and the iodine in pregnancy. The educational intervention consist of four intervention components: an iodine feedback tool, and educational iodine conversation with a healthcare professional, an iodine factsheet and an iodine video. The healthcare professionals who carry out the educational conversation will receive a specially designed training program.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* non-pregnant Female
* Age 18-24 years at the time point of recruitment
* Attending the specified settings
* Sufficient language skills to understand the study information, informed consent and the questionnaire

Exclusion Criteria

* Having a thyroid disease
* Pregnancy at the timepoint of recruitment and during the intervention period
* Lactation
Minimum Eligible Age

18 Years

Maximum Eligible Age

24 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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EU Horizon

UNKNOWN

Sponsor Role collaborator

UK Research and Innovation

OTHER

Sponsor Role collaborator

EUthyroid

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Bangladesh University of Health

Dhaka, , Bangladesh

Site Status NOT_YET_RECRUITING

Institute of Marine Research

Bergen, Bergen, Norway

Site Status RECRUITING

Islamia College Peshawar

Peshawar, Khyber Pakhtunkhwa, Pakistan

Site Status NOT_YET_RECRUITING

Jagiellonian University

Krakow, , Poland

Site Status NOT_YET_RECRUITING

The Queen's University of Belfast

Belfast, , United Kingdom

Site Status NOT_YET_RECRUITING

University of Surrey

Guildford, , United Kingdom

Site Status NOT_YET_RECRUITING

Countries

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Bangladesh Norway Pakistan Poland United Kingdom

Central Contacts

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Henry Völzke

Role: CONTACT

0049 3834 86 75 41

Facility Contacts

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Mithila Faruque, Dr.

Role: primary

+880 1791-042087

Lisbeth Dahl, Dr.

Role: primary

+47 472 91 689

Rehman Mehmood Khattak, Dr.

Role: primary

+92 91 9222227

Małgorzata Trofimiuk-Müldner, MD PhD

Role: primary

+48 12 4002300

Jayne Woodside, Prof.

Role: primary

+44 28 909 78942

Sarah Bath, PhD, RD, FHEA

Role: primary

+44 1483 300800

Other Identifiers

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101095643

Identifier Type: -

Identifier Source: org_study_id

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