a 2006 study prepared by birgitte andersen and marion frenz, published by industry canada, was "unable to discover any direct relationship between p2p file-sharing and cd purchases in canada". the results of this survey were similarly criticized by academics and a subsequent revaluation of the same data by dr. george r. barker of the australian national university reached the opposite conclusion. "in total, 75% of p2p downloaders responded that if p2p were not available they would have purchased either through paid sites only (9%), cds only (17%) or through cds and pay sites (49%). only 25% of people say they would not have bought the music if it were not available on p2p for free." barker thus concludes; "this clearly suggests p2p network availability is reducing music demand of 75% of music downloaders which is quite contrary to andersen and frenz's much published claim."