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PURPOSE: To evaluate the effect of evidence-based medicine (EBM) education on physicians' short-term and long-term understanding of research methods and statistics. METHOD: Twenty-four gastroenterology (GI) fellows attended a three-day seminar about evidence-based medicine and the critical appraisal of medical literature. Attendees completed the same 14-item test on this material at the start of the seminar, at the conclusion of the seminar, and six months after the seminar. A student's t-test and chi-square analysis were performed to determine the differences between test scores by testing date and performance on test items. RESULTS: Seminar attendees improved their test scores between pre-seminar and post-seminar tests (mean test score: 57% +/- 16% versus 82 +/- 14%, respectively; p <.001) and between pre-seminar and six-month post-seminar tests (mean test score: 57% +/- 16% versus 78% +/- 13%, respectively; p <.001). Seminar attendees showed significant improvement in frequency of correct answers with individual questions on concealment of allocation, relative risk reduction, and meta-analysis trial methods. CONCLUSIONS: In this pilot study, the critical appraisal skills necessary to practice EBM were taught to GI fellows in a seminar format that led to significant improvement in their understanding of research methods and statistics. Data from this pilot study justify a definitive trial examining the educational value of EBM seminars for physicians.
Schoenfeld et al. (2000) studied this question.