Description of each file contained in Code_French_Connection.zip File 1: 'Data Perturbation.pdf' As the dataset "Enquête Mode de Vie des Français" is not an open-access dataset, the author has been required both (i) to provide to Demographic Research only the variables which have been constructed for the study and (ii) to perturbe the dataset. The method which has been used to disturb data is explained in this file and globally consists in disturbing only 3% of the dataset in a random way. File 2: 'Permute_Baudin_DR.dta' It is the file containing the perturbed dataset. All the results from the original dataset are preserved even if p-values and values of estimated parameters differ slightly. File 3: 'commands.do' This do file contains all the stata commands needed to reproduce the results of the paper.