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| Past/current* efforts - Data collection on |
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| national level |
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| n | National Health
and Nutrition Examination Surveys |
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| (NHANES) |
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| – | NHANES I
(1971-74) |
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| – | NHANES II
(1982-84): Hispanic health and |
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| nutrition
examination survey |
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| – | NHANES III
(1988-94) |
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| – | NHANES IV
(1999-present)* |
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| 4 |