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The epidemiology of iodine deficiency disorders (IDD) in Yemen

Published online by Cambridge University Press:  02 January 2007

AZ Zein ,
S Al-Haithamy ,
Q Obadi  and
S Noureddin
AZ Zein
Affiliation:
Health and Nutrition, UNICEF (Yemen), PO Box 5747, Grand Central Station, New York, NY 10163, USA
S Al-Haithamy*
Affiliation:
Health and Nutrition, UNICEF (Yemen), PO Box 5747, Grand Central Station, New York, NY 10163, USA
Q Obadi
Affiliation:
Nutrition Department, Ministry of Public Health, P.O. Box 299, Sana'a, Yemen
S Noureddin
Affiliation:
IDD consultant, 14 Rue Ibn, Al Haitam, Rabat, Morocco
*
*Corresponding author
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Abstract

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Objective

This first nationwide survey was undertaken to estimate the prevalence rates and severity of iodine deficiency disorders (IDD) and the proportion of households consuming iodized salt.

Design

The country was stratified into two ecological zones and 30 clusters (primary schools) from each zone, including the required numbers of pupils, were selected randomly. A subsample of pupils provided urine and salt samples for the determination of urinary iodine excretion (UIE) and presence of iodate, respectively.

Setting

Yemen.

Subjects

There were a total of 2984 pupils aged 6–12 years of whom 2003 were boys and 981 girls. The majority (1800) pupils were from the lowland/coastal areas (zone II) and the rest (1184) from the mountainous regions (zone I).

Results

The total goitre rates (TGR) in the whole country, zones II and I were 16.8%, 31.1% and 7.4%, respectively. The TGR in zone I for males was 32.8% and 27.3% for females, while in zone II the corresponding rates were 8.1% and 5.9%, respectively, and the differences were not statistically significant. Only three cases of visible goitres were encountered. The median UIE levels in zones I, II and the whole country were 13.6, 18.9 and 17.3 μg dl−1, respectively. Based on UIE cut-off points recommended by WHO, IDD was severe in 4.7% of pupils in zone I and 2.6% in zone II. Mild and moderate IDD were found in 18.5% and 8.7% of the pupils respectively. Nearly 70% of the surveyed pupils had UIE values of > 10 μg dl−1 (no deficiency). Girls had relatively better iodine nutrition as suggested by higher levels of median UIE. In addition, across all age groups median UIE values were above 10 μg dl−1. Over half of the households consumed iodized salt.

Conclusions

Since the introduction of universal salt iodization in 1996 both the prevalence and severity of IDD in Yemen were reduced markedly and Yemen can now be classified as a country with a mild IDD problem. However, the low level of households consuming iodized salt may hamper the goal of IDD elimination.

Keywords

Iodine deficiency disordersGoitreUrinary iodine excretionIodized salt
Type
Research Article
Information
Public Health Nutrition , Volume 3 , Issue 2 , June 2000 , pp. 245 - 252
Copyright
Copyright © CABI Publishing 2000

References

1Yemen General Grain Corporation and Ministry of Health. Yemen Arab Republic National Survey, 1979. Sana'a: Yemen General Grain Corporation and Ministry of Health, 1979.Google Scholar
2Kristiannson, B, Nasher, A, Bagenholm, G. Nutrition, Growth and Health among Pre-school Children in PDRY Yemen 1982–83. PDRY: Ministry of Health, Aden, 1983.Google Scholar
3Azizi, F. Iodine Deficiency Disorders in the Republic of Yemen. Assignment Report No. WHO/EMORO/EM/NUT/106/E/R/12.91/30. Alexandria: Yemen: World Health Organization 1991.Google Scholar
4Central Statistical Organisation. Statistical Year Book, Yemen. Sana'a: Al-thawra Newspaper Publishers, 1997.Google Scholar
5UNICEF. The State of the World's Children. New York: Oxford University Press, 1998.Google Scholar
6World Bank/Radda Barnen/UNICEF. Children and Women in Yemen, a Situation Analysis. Sana'a: UNICEF Yemen, 1998.Google Scholar
7UNDP. Human Development Report. New York: Oxford University Press, 1999.Google Scholar
8Zar, JH. Biostatistical Analysis. Englewood Cliffs: Prentice Hall, 1984.Google Scholar
9WHO/UNICEF/IDDIDD. Indicators for Assessing Iodine Deficiency Disorders and their Control Through Salt Iodination. Report No. WHO/NUT/94.6. Geneva: World Health Organization, 1994.Google Scholar
10Dunn, JT, Crutchfield, HE, Gutekunst, R, Dunn, AD. Two simple methods for measuring iodine in urine. Thyroid 1993; 3: 119–23.CrossRefGoogle ScholarPubMed
11Pardede, LV, Hardjowasito, W, Gross, R, et al. Urinary iodine excretion is the most appropriate outcome indicator for iodine deficiency at field conditions at district level. J. Nutr. 1998; 128: 1122–6.CrossRefGoogle ScholarPubMed
12Kapil, U, Saxena, N, Ramachandran, S, Balamurugan, A, Nayar, D, Prakash, S.Assessment of iodine deficiency disorders using the 30-cluster approach in the national capital territory of Delhi. Ind. Pediatr. 1997; 33: 1013–16.Google Scholar
13Palestinian Ministry of Health. Report on Iodine Deficiency Survey in West Bank and Gaza Strip. Palestine: Ministry of Health, 1997.Google Scholar
14Zein, AZ. Situation Analysis and Control Strategy for IDD in Yemen. UNICEF Yemen, 1993.Google Scholar
15Office of the Attorney General. Law No. 32/1996 on Fortifying Food with Iodine. Yemen: Official Gazette, 1996.Google Scholar
16WHO/UNICEF/ICCIDD. IDD in the Middle East. IDD Newsletter 1993 9: 13–17.Google Scholar
17Ministry of Public Health/UNICEF. IDD Survey in Lebanon. Lebanon: 1998.Google Scholar
18Ministry of Health/UNICEF/WHO. Monitoring Universal Salt Iodination in Oman. Oman: Muscat, 1997.Google Scholar
19Suleimani, R, Omar, S, Al-Attas, A.The prevalence of endemic goitre among school children and adolescents in Gizan, Saudi Arabia. Saud. Med. J. 1995 16: 291–3.Google Scholar
20UNICEF. Salt Iodization Database. Health and Nutrition Section, UNICEF Yemen, 1999.Google Scholar