Vitamin and Mineral Nutrition Information System (VMNIS)

Coverage of urinary iodine surveys

Population coverage (school-age children, 6-12 years) by urinary iodine surveys carried out between 1993-2003, by WHO region. Number of countries with national, and if not available, sub-national urinary iodine surveys.

Table adapted from the following document:

de Benoist B et al., eds. Iodine status worldwide. WHO Global Database on Iodine Deficiency
Geneva, World Health Organization, 2004


WHO Regiona Total number of school-age children (in millions)b School-age children covered (in millions) Coverage (%) Number of countriesa with
National surveys Sub-national surveys No Data
Africa 128.9 116.9 90.7 17 17 12
Americas 109 98.8 90.6 13 7 15
South East Asia 242.4 239.4 98.8 7 2 2
Europe 81.2 70.5 86.8 21 17 14
Eastern Mediterranean 87.1 72.6 83.4 11 4 6
Western Pacific 199.4 183 91.8 6 4 17
Total 848 781.2 92.1 75 51 66

a 192 WHO Members States
b Based on population estimates for the year 2002 (United Nations, Population Division, World Population Prospects: The 2002 Revision)

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