Article 9Data sources and quality standards
1.The statistics shall be based on the following data sources according to their availability in the Member State and in accordance with national laws and practices:
(a)records of administrative and judicial actions;
(b)registers relating to administrative actions;
(c)registers of the population of persons or of a particular sub-group of that population;
(d)censuses;
(e)sample surveys;
(f)other appropriate sources.
As part of the statistics process, scientifically based and well documented statistical estimation methods may be used.
2.Member States shall report to the Commission (Eurostat) on the data sources used, the reasons for the selection of these sources and the effects of the selected data sources on the quality of the statistics, and on the estimation methods used, and shall keep the Commission (Eurostat) informed of changes thereto.
3.At the request of the Commission (Eurostat), Member States shall provide it with all the information necessary to evaluate the quality, comparability and completeness of the statistical information.
4.Member States shall inform the Commission (Eurostat) without delay of revisions and corrections to the statistics supplied under this Regulation, and of any changes in the methods and data sources used.
5.The measures relating to the definition of the appropriate formats for the transmission of data shall be adopted in accordance with the regulatory procedure referred to in Article 11(2).