Many medical students in Germany take part in research at their university, as part of their work on a doctoral dissertation. There are alternatives to this model in other countries. To have a basis for comparison, the research activities of medical students at the University of Würzburg were analysed. A questionnaire was sent to all members of the teaching staff of the medical faculty of the University Würzburg (n = 238). It contained 20 questions about the number of students whose research had been supervised, duration of the research, number of uncompleted research studies, cost of materials, resulting publications and estimate of value of the research done. Among those questioned were two groups of professors (50 and 66 respectively, 122 senior lecturers or titular professors). 106 faculty members answered the questionnaire sent to them (45%), 66 working clinically, 26 in a clinic-related institute and 14 in basic research. The students' research usually started in their 4th year and on average took up 216 full-time days. The average training period had lasted for 3 months, 10% of student broke off their research, and each faculty member supervised a mean of 4.5 students. Nonexperimental work (48.3%) cost on average DM 2300, experimental work (51.7%) DM 15,000. Generally two publications resulted and one or two posters/oral communications per student. Two-thirds of the faculty members thought that research undertaken by medical students was important for maintaining a qualitatively and quantitatively high publication level at a university clinic. Work on a doctoral dissertation not only promotes scientific thinking of the future doctor but also contributes towards maintaining scientific standards.