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CompletedNCT06989879Updated May 25, 2025

Knowledge of Students About Vitamin A and Assessment of Eye Manifestations in Quranic Schools (Khalwai) Khartoum State, Sudan 2022

An observational study in Vitamin A Deficiency and Night Blindness, sponsored by University of Khartoum. Completed at 1 site in Sudan. Per ClinicalTrials.gov, last updated 2025-05-25.

Sponsored by University of Khartoum · Observational

Study type
Observational
Model
Other
Time perspective
Cross-sectional
Enrollment
332
Sex
All
01

Study summary

This is an observational study that aims to study vitamin A deficiency status, knowledge, and nutritional assessment among Khalwa (Quran boarding school) individuals. we want to assess the magnitude of the problem and put appropriate recommendations for it.

02

Conditions studied

  • Vitamin A Deficiency
  • Night Blindness

Keywords

  • Vitamin A deficiency
  • Night blindness
  • Quranic boarding school
  • knowledge
  • nutrition
03

In context

Vitamin A Deficiency

67 studies on the registry are indexed under Vitamin A Deficiency; 7 are open to participants now.

This study's enrollment of 332 is above the median of 258 across 17 observational studies indexed under Vitamin A Deficiency.

Browse Vitamin A Deficiency studies →

Lead sponsor

University of Khartoum is the lead sponsor of 14 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Sampling method
Probability sample

Study population

Khalwa (Quranic boarding school) dormitory residents are either dedicated teachers, students, or those who teach and study at the same time. The study participants were those who lived in the dormitory regardless of their status. Those in the last category were counted as students.

The study was conducted in traditional Quran centers in East Nile Province, Khartoum.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • All Khalwa (Quranic-boarding-school) dormitory residents of in East-Nile province, Khartoum State

Exclusion criteria

Exclusion Criteria:

  • Anyone who refuses to participate in the study.
  • Those who live with their families
05

Study design

Observational model
Other
Time perspective
Cross-sectional
Enrollment
332 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Prevalence rate of night blindness

    Time frame: At enrollment

  2. Vitamin A knowledge score

    Time frame: At enrollment

  3. Prevalence rate of vitamin A deficiency signs

    Time frame: At enrollment

  4. Prevalence rate of respiratory tract infection

    Time frame: At enrollment

  5. Prevalence rate of diarrhea

    Time frame: At enrollment

  6. Food specific (milk, vegetables, fruits, etc.) prevalence rate of eating/drinking from outside dormitory

    Time frame: At enrollment

07

Study locations

1 site
  • Faculty of Medicine, University of Khartoum
    Khartoum, Sudan
08

References and documents

Individual participant data

Plan to share: Yes

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Nov 2022 to primary completion in Dec 2022, 1 month.

How these figures are worked out, and which studies are left out of them.

Registered
May 8, 2025
First posted
May 25, 2025
StartActual
Nov 1, 2022
Primary completionActual
Dec 1, 2022
CompletionActual
Jan 1, 2023
Last update
May 25, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 25, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06989879
Lead sponsor
University of Khartoum
Responsible party
Elkhidir Bashir Elkhidir Ali (Principal investigator, University of Khartoum) — Principal investigator
First posted
May 25, 2025
Start date
Nov 1, 2022
Primary completion
Dec 1, 2022
Completion
Jan 1, 2023
Last update
May 25, 2025

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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