Please select the eligibility criteria that correspond to the clinical trial below.
Title: Effects of Vitamin A Supplementation on Intestinal Parasitic Reinfections, Growth, Iron Status and Educational Achievement Among Orang Asli Schoolchildren in Pos Betau, Pahang, Malaysia
Brief Summary: Intestinal parasitic infections, malnutrition and iron deficiency anaemia (IDA) are still considered as public health problems in rural Malaysia especially among Orang Asli children. Despite intermittent control programmes, the prevalence of these problems is still high suggesting the need of other control and interventions measures. This randomized double-blind, placebo-controlled trial was carried out among Orang Asli schoolchildren from Sekolah Kebangsaan Betau in Pos Betau, Pahang (200 km northeast Kuala Lumpur) to investigate the effects of vitamin A supplementation on intestinal parasitic reinfections, growth, iron status and educational achievement.

HYPOTHESES

1. Vitamin A supplementation has a negative effect on intestinal parasitic reinfections and the worm burden of infections among Orang Asli schoolchildren in Pos Betau, Kuala Lipis, Pahang.
2. Vitamin A supplementation has a positive effect on growth (weight and height) among Orang Asli schoolchildren.
3. Vitamin A supplementation is effective in improving serum iron status among Orang Asli schoolchildren.
4. Vitamin A supplementation has a positive effect on cognitive function and educational achievement among Orang Asli schoolchildren.


Options:
A: Inclusion Criteria:

1. Children aged 57-88 months at the time of initiation of the study
2. Children living in the locality defined by the study and not enrolled in school.
3. Consent from parent/guardian.

Exclusion Criteria:

1. Severely malnourished children (weight for age or height z-scores \<-3 standard deviations below the WHO growth reference standards)
2. Children found to be below 57 months and still holding an under five card or above 88 months at the time of initiation of the study or enrolled in school, based on verification of birth dates at screening
3. Children whose families plan to leave the study area before completion of the study
4. Consent not obtained from parent/guardian
5. Children suffering from diarrhea at the time of initiation of the study or with high fever, based on the report of symptoms by the parent/guardian
6. Children with severe anemia (Hb \<7.0 g/dL) as determined at the baseline blood draw.
B: Inclusion Criteria:

* Age 7-12 years (according to birth date in birth certificate).
* No evidence of concomitant severe and/or chronic illness such as acute respiratory tract infections, mental retardation and neurological deficits.
* Consent of parent to participate in the study.

Exclusion Criteria:

* history or evidence of underlying haematological-related diseases such as thalassaemia and ovalocytosis.
* menstruating females (age \>13)
C: Inclusion Criteria:

* for infant: completion of NCT01583972
* for mother: mother of study infant

Exclusion Criteria:

* none
D: Inclusion Criteria:

* Pregnant low-risk obstetric

Exclusion Criteria:

* Premature birth
* Newborn babies with birth defects and / or other serious diseases

Answer: B