1.By 19 January 2008 each Member State shall submit a detailed methodological report to the Commission describing how the data have been collected and the statistics compiled. That report shall include details of any sampling techniques and an evaluation of the quality of the resulting estimates.
2.The Commission shall examine the reports and present its conclusions to the Member States.
3.The Member States shall inform the Commission of any change in the information provided for under paragraph 1 within three months of the introduction of such change. They shall also forward to the Commission details of any substantial changes in the collection methods used.