Of the applicable regulations the duty to include the sex datum in some files of particulars of the public company in determinate suppositions, but not in all files is detached. The public company can foresee the communication of data for statistical purposes to one another public administration, without the consent of the interested persons, in application of article 21 LOPD, whenever the study has the consideration of statistical activity of interest of the Generalitat. In any case, it will normally be necessary previously to anonymize the studies.