[Engel's coefficient and dietary quality in Argentine households inhabited by older adults (2004-2018)].

Background and Objectives: To determine if there were alterations in the proportion of spending that Argentine households of older adults spend on the purchase of food (Engel's coefficient) and other goods and services, as well as to evaluate the dietary quality of the members of these households.
Materials and Methods: From the last three waves of the National Household Expenditure Survey (2004-2005, 2012-2013 and 2017-2018) those households in the province of Buenos Aires inhabited by older adults are filtered and carried out. Median difference tests for the proportion of spending these households spend on food and other goods and services. In turn, the per capita quantities acquired from 17 food groups are compared with the quantities recommended in the dietary guidelines for the Argentine population.
Results: A statistically significant reduction is found in the median of the proportion of spending that older adults in the province of Buenos Aires spend on the purchase of food, in combination with a statistically significant increase in the proportion of spending directed to equipment and operation home, education and various services. However, the amounts purchased of milk and yogurt and vegetables A and B are insufficient in relation to those recommended, while the consumption of meat is excessive.
Conclusions: Although economic theory would interpret a reduction in the Engel coefficient as an indication of improved well-being, it should be taken into account that these households might not be following an optimal diet if they consumed the amounts of food that they claim to buy.
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