Dietary Vitamin A Requirement in Chinese Children and the New Technology of Dietary Assessment

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

COMPLETED

Total Enrollment

403 participants

Study Classification

OBSERVATIONAL

Study Start Date

2009-07-31

Study Completion Date

2010-09-30

Brief Summary

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Vitamin A deficiency remains a major public health problem in developing country worldwide. Young Children are considered to be at greatest risk of deficiency. However, there is little information on the vitamin A requirement of Chinese children. In the present study, about 400 children aged between 4 and 9 years old in a kindergarten and an elementary school of Shiyan City were screened before admission by questionnaire and anthropometric measurement. The vitamin A status of children was assessed by serum vitamin A level, relative dosage reaction and stable-isotope dilution technique. At the same time, their dietary vitamin A intakes were estimated by weighted-food dietary survey. The dietary vitamin A requirement in young children was determined on the basis of dietary vitamin A intakes in Children with adequate vitamin A level.

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Detailed Description

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Conditions

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Vitamin A Deficiency

Study Design

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Study Time Perspective

CROSS_SECTIONAL

Study Groups

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4-6 years old group

No interventions assigned to this group

7-9 years old group

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* well-nourished children with normal serum retinol(\>=1.40umol/L)

Exclusion Criteria

* ongoing or previous illnesses,
* having taken nutritional supplements within 3 months,
* positive results in the fat absorption test or parasite test,
* increased level of CRP (\> 8 mg/L), or
* lower serum level of retinol (\< 1.40 umol/L)

Minimum Eligible Age

4 Years

Maximum Eligible Age

9 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No