Impact of undergraduate courses on medical student performance in basic sciences.

Many students planning to apply to medical school take undergraduate courses (for example, biochemistry, embryology, histology, and vertebrate anatomy) covering concepts that are taught within the medical school curriculum. Do these students perform better in similar courses in medical school than students without prior exposure? In the study reported here of 310 medical students, approximately 50 percent had taken biochemistry, 50 percent had taken a course dealing with vertebrate anatomy, 25 percent had taken embryology, and 25 percent had taken histology as undergraduates. In comparisons of the students with prior exposure to these courses and those without prior exposure, no statistical difference was noted in cumulative grade-point averages for the first year in medical school or in the students' scores in three of the four individual medical courses examined. In addition, there was no significant difference in the academic performances in the four courses between the students in the upper and the lower quartiles of the class. Implications regarding undergraduate preparation of medical school applicants are discussed.