ional Health Interview Survey data indicate that rates of diagnosed diabetes are higher in low-income groups and among persons with fewer years of education (Public Health Service Publication 5). There is also a connection between blacks and diabetes but in Type 1 the results aren't positive yet.
             Diabetes screening refers to the application of blood and/or urine tests preferably after a glucose challenge to large numbers of persons in the general population, or better yet, to selected high-risk groups. Blood tests are more sensitive and specific than urine tests and are more likely to identify the diabetics in the population studied. Formerly, a urine test for sugar was accepted as an adequate screening procedure. Today, it is recognized that sugar is not always present in the urine of a person who has diabetes, and that a person without diabetes may have sugar in the urine. Also, by the time sugar shows up in the urine, the disease may be far advanced (Publi
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