The definition of the Physical Quality of Life Index (PQLI) is the measure of the quality of life or well-being of a country. The value is the average of three statistics: basic literacy rate, infant mortality, and life expectancy at age one. These statistics are all equally weighted on a 0 to 100 scale, as used in the dental literature. Quality of life indexes can be presented by country, by state, or by city. The index provides an overall look at the health and literacy of a country, state, or city and can be used to identify areas of the index that should be improved. It can also help measure the success of improvements that are already in place. The 2019 quality of life index will show the rankings of each country, state, or city and may further break down certain aspects of the quality of life of each for an expanded view.