When projecting what would have happened and by comparing to what effectively
happened after the change, we come to a precise econometric estimation of the change,
making the data comparable between themselves, from the point of view of intrinsic factors to
the behavior of indicators — among these, economic factors, although they are exogenous to
the ‘accounting method’ factor.
We highlight the limitation of all econometric method that uses projections, since the
projection does not capture future occurrences of the structural breaks. Moreover, we do not
expect any other event that may cause changes in the temporal future path of the variable
under study beyond what was considered in this research.