摘要：The U.S. Department of Agriculture
(USDA) has conducted
food consumption surveys
since the 1930¡¯s. These surveys provide
an up-to-date picture of the dietary
status of Americans, how
much they are eating at home or
away, and the degree to which they
are meeting dietary recommendations.
By comparing current survey
estimates of food and nutrient intakes
with those of previous surveys,
researchers can identify
changes in diet over time. Data from
these surveys are used in administering
a variety of public programs
that affect the supply, safety, and
distribution of the Nation¡¯s food.
The data are also used to plan food
assistance, health interventions, and
educational programs.
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