Mafia infiltrations in Italian municipalities: two statistical indicators

We study the administrative behaviour of a sample of Italian municipalities dismissed by the Government because of mafia infiltra- tions, looking at their balance-sheet data. Using linear discriminant analysis and logistic regressions, we put forward two statistical indicators of the probability that a mafia infiltrated a city council. Our results characterise the administrative profile of infiltrated municipalities. We obtain non-obvious results concerning their i) high levels of arrears, both of tax collections and payments; ii) low levels of indebtness; and iii) low levels of capital expenditures, especially for public works.