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Interpreting results of micronutrient assessment

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The World Health Organization and other organizations have formulated recommendations regarding the significance of various prevalence rates of micronutrient deficiencies in populations. Of course, as with protein-energy malnutrition, no precise cut-off value can be applied in every situation; the importance of any health or nutrition problem must be judged after taking into account many factors. Click on the descriptions below to see summary tables of recommendations.

Classification of public health significance of anaemia, based on prevalence estimated from haemoglobin or haematocrit measurements. (From: Iron deficiency anaemia assessment, prevention, and control: A guide for programme managers. UNICEF-UNU-WHO, 2001.)

Criteria to determine if there is significant vitamin A deficiency in a population. (From: Assessment and control of vitamin A deficiency: The Annecy Accords. J. Nutr. 132: 2845S-2850S, 2002)

Cut-off points defining degrees of iodine deficiency and sufficiency in a population. (From: Assessment of iodine deficiency disorders and monitoring their elimination: A guide for programme managers, 3d ed. WHO, 2007.