Indicators for Assessing Vitamin A Deficiency and their Application in Monitoring and Evaluating Intervention Programmes
Document produced by the WHO Division of Nutrition
Technical Units
Order Number    19300093   
Price    CHF    10.00 / US$    12.00 Developing countries:    CHF    7.00
English     1996        66   pages
Table of contents
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Elaborates basic principles for the use of 24 specific biological and ecological indicators in the surveillance of vitamin A deficiency. The document is part of the recent international effort to eliminate vitamin A deficiency and its consequences as a public health problem by the year 2000. An estimated 2.8 million preschool-age children are at risk of blindness from vitamin A deficiency, and the health and survival of 251 million others are seriously compromised.
Addressed to managers of national programmes for the prevention and control of micronutrient malnutrition, the document offers abundant advice on the principles governing the use of biological indicators for surveillance, and explains the scientific rationale for each indicator, including its limitations and cutoff points for interpretation in terms of public health significance. For the first time, a series of ecological indicators that can be used to identify high risk areas is presented together with advice on cutoff points for their interpretation. Also included are indicators for monitoring progress towards achieving the goal of eliminating vitamin A deficiency as a significant public health problem by the year 2000. Annexed to the text are a ranking of countries according to the severity of public health problems caused by vitamin A deficiency, and several sample survey and reporting forms.