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A Distribution Gap
measures the difference between projected food consumption
and the amount of food needed to increase
consumption in food-deficit income groups within individual
countries to meet nutritional requirements. Inadequate
economic access to food is the major cause of chronic
undernutrition in developing countries and is related
to the level of income. In the ERS global food security
model, the total projected amount of available food is
allocated among different income groups using income distribution
data.
A Nutrition Gap is estimated
to measure food insecurity. This gap represents the difference
between projected food supplies and the food needed to
support per capita nutritional standards at the national
level.
A Status Quo Gap is estimated
to measure changes in food security. This gap represents
the difference between projected food supplies and the
food needed to maintain per capita consumption of the
most recent 3-year period.
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