Effect of educational interventions and medical school policies on medical students' attitudes toward pharmaceutical marketing practices: a multi-institutional study.

Purpose: To determine the effect of educational interventions on medical students' attitudes toward pharmaceutical industry marketing practices and whether restrictive medical school policies governing medicine-industry interactions are associated with student support for banning such interactions.

Method: Prospective cohort study involving the graduating classes of 2009 (intervention, n=474) and 2010 (control, n=459) at four U.S.