Loayza, Norman; Rigolini, Jamele; Llorente, Gonzalo - 2012
-country panel dataset containing detailed information on the distribution of income and expenditures. When the size of the middle … class increases (measured as the proportion of people with income above 10 US Dollars a day in PPP terms), social policy on … than those of lower poverty, lower inequality, or higher GDP per capita. -- poverty ; middle class ; income ; institutions …