Health and nutrition examination survey II, 1976-1980

The National Health and Nutrition Examination Survey II was one of a series of population based surveys conducted by the National Center for Health Statistics to provide information on the health status of the nation. Data were collected through questionnaires as well as through direct medical examination. This portion of the survey contains data from the demographic and allergy skin testing parts of the survey for persons 6 through 74 years of age. Skin tests were given to determine the number of positive reactions to eight allergens, one diluent and one histamine. For positive reactions, the type and size of the reaction were recorded.