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Analysis of Vitamin A Data from the Health and Nutrition Examination Surveys¹

Life Sciences Research Office, Federation of American Societies for Experimental Biology, Bethesda, MD 20814

An Expert Panel on Vitamin A Nutriture assessed serum vitamin A values and related data collected during the first and second National Health and Nutrition Examination Surveys (NHANES I and NHANES II) and the southwest component of the Hispanic Health and Nutrition Examination Survey (SW HHANES). The appropriateness of the analytical methodologies and adequacy of the quality-control procedures used to obtain the serum vitamin A values were evaluated. Age-specific guidelines for the interpretation of serum vitamin A values in selected low ranges (<20, 20–40 and 25–29 µg/dl) were developed, and estimates of the prevalence of serum vitamin A values in these ranges were presented for each of the three surveys.

KEY WORDS: • vitamin A • HANES

¹ This is a synopsis of the report "Assessment of the Vitamin A Nutritional Status of the U.S. Population Based on Data Collected in the Health and Nutrition Examination Surveys," prepared under FDA Contract No. 223-84-2059. The full report is available for $14.00 postpaid from the FASEB Special Publications Office, 9650 Rockville Pike, Bethesda, MD 20814.

Manuscript received 28 October 1986. Revision accepted 21 November 1986.

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