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Massive school screening aims to fix blood pressure norms for south african kids

NCT ID NCT05982847

Knowledge-focused Sponsor: North-West University, South Africa Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study will screen blood pressure in over 22,000 children aged 5-18 across South Africa. The goal is to create the country's first reference charts for normal blood pressure, since current charts are based on US and European data. This will help doctors correctly diagnose and manage high blood pressure in South African youth.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could lead to accurate blood pressure charts for South African children, reducing misdiagnosis and improving hypertension management.
What could go wrong
This is an observational screening study, not a treatment trial. It may not directly change health outcomes, and developing guidelines takes time.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 22,464 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2024

Expected to finish

Nov 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The target population for this study includes 5 to under 18 years school-aged children in South Africa from all provinces in the country selected in a randomized manner and to ensure generalizability. All South African public ordinary schools are categorised into five groups, called quintiles, largely for purposes of the allocation of financial resources from government. Quintile one is the lowest socioeconomic quintile, while quintile five is the highest. In addition, lower quintile schools are mostly rural and/or peri-urban. Participants will be drawn from quintile 1-5 schools and those in more remote areas will be reached via mobile fieldwork teams. A sample of 22 464 (81% Black African; 9% Coloured; 8% White and 2% Indian/Asian) will be required to enable computation of reference values for each age and sex across urban and rural settings in all provinces.

Ages

5 to 18 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * All children between ages 5-\<18 years * All children with voluntary assent/consent and parent's permission Exclusion Criteria: * circumstances interfere with the participant's ability to give informed consent (diminished understanding or comprehension, or any language barriers that may pose potential risk in participation under false expectations) * randomly selected children who choose not to participate (lack of assent/consent), even if parent's permission was received, * conditions that interfere with a patient's ability to follow study guidelines, e.g., the use of drugs, alcohol or tobacco products * ages \>18 years or under 5 years * Children will be excluded from the analysis for the determination of normative reference values for blood pressure and anthropometry if taking certain concomitant medication(s) that may affect their blood pressure, or any underlying disease e.g., chronic kidney disease, chronic heart disease etc. that may raise blood pressure.

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Conditions

The condition(s) this trial relates to.

Behavior cardiovascular disorder hypertensive disorder Obesity obesity disorder Pediatric Obesity

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hypertension Obesity, adolescent Obesity, childhood

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    11 sites in 2 countries. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Hypertension in Africa Research Team (HART), North-West University

    RECRUITING

    Potchefstroom, North West, 2531, South Africa

  • Nelson Mandela Metropolitan University

    RECRUITING

    Port Elizabeth, Eastern Cape, South Africa

  • Red Cross War Memorial Children Hospital

    NOT_YET_RECRUITING

    Cape Town, Western Cape, South Africa

  • South African Medical Research Council

    NOT_YET_RECRUITING

    Cape Town, Western Cape, South Africa

  • University of Cape Town

    NOT_YET_RECRUITING

    Cape Town, Western Cape, South Africa

  • University of KwaZulu-Natal

    NOT_YET_RECRUITING

    Durban, KwaZulu-Natal, South Africa

  • University of Limpopo

    NOT_YET_RECRUITING

    Polokwane, Limpopo, South Africa

  • University of Zurich

    NOT_YET_RECRUITING

    Zurich, Switzerland

  • University of the Free State

    RECRUITING

    Bloemfontein, Free State, South Africa

  • University of the Witwatersrand

    RECRUITING

    Johannesburg, Gauteng, South Africa

  • Walter Sisulu University

    NOT_YET_RECRUITING

    Mthatha, Eastern Cape, South Africa

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