What factors are measured with the help of the quality of life?

Quality of life is a subjective and intangible concept. Universal Declaration of Human Rights of 1948 provided a list of factors that are considered while evaluating the quality of life. It includes GDP which is the total output of an economy, distribution of income in society, unemployment level, life expectancy, and literacy rate. It also includes certain other factors such as the housing, access to clean water, pollution level, the standard environment level of transport, climate changes, etc.