How can these instruments be used to predict the quality of life in developing countries?

“Diseases had already begun to disappear before vaccines were introduced, because of better hygiene and sanitation. Statements like this are very common in anti-vaccine literature, the intent apparently being to suggest that vaccines are not needed. Improved socioeconomic conditions have undoubtedly had an indirect impact on disease. Better nutrition, not to mention the development of antibiotics and other treatments, have increased survival rates among the sick; less crowded living conditions have reduced disease transmission; and lower birth rates have decreased the number of susceptible household contacts. But looking at the actual incidence of disease over the years can leave little doubt of the significant direct impact vaccines have had, even in modern times. Here, for example, is a graph showing the reported incidence of measles from 1950 to the present.”(CDC) How can misconceptions be eliminated using the data management learned in the past three weeks? Paragrapph 2 (134 words and 2 references please) What are some of the factors associated with the Quality of Life scales, particularly for the Healthy Life Year and Healthy Life Expectancy? How can these instruments be used to predict the quality of life in developing countries?

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