<p>The reference being perseveratively posted is OLD data, published 7 years ago, and probably collected several years before that. Its possible that the methodology was to review applications from students admitted to different professional/grad schools who applied in, say for example, 1995. I believe the study reviewed “30 years of literature” so the data might in fact be even older. It may be extremely stale and not very relevant to today’s professional/grad admission procedures.</p>