I am trying to figure out how to run a multiple regression analysis with gini index as the dependent variable. Originally I planned to use top income tax rates (individual and corporate) as independent variables for a time series analysis.
However, upon doing lit review, it became clear that accepted methods to analyze tax progressivity’s impact on inequality involves using other indices such as the suits index. Unfortunately, I cannot find any research that explains how to calculate the suits index clearly. Various notation forms shown are unfamiliar to me and I can’t make sense of it.
If someone could maybe explain how to calculate the suits index, I would appreciate it. I understand logarithms and calculus well enough, but again the notation systems used are either something I forgot or never learned.