Figure 1.

(A) Relative proportion of medical students in Germany with a voluntary commitment. Numbers above columns indicate the absolute number of students in each group. Test for statistical significance was performed using the Χ² test. (B) Relative proportion of different types of commitment. The type ‘organisation’ refers to organisational work in the medical faculty. Test for statistically significant differences between male and female students was performed using the Χ² test. (C) Estimation of the proportion of committed students in German federal states. In the states Bremen and Brandenburg, there are no medical faculties. The number in each state refers to the proportion in % of voluntarily committed students in each state. (D) Visualisation of the 95% CIs of the estimated proportions of committed students in German states. White vertical bars depict the estimated proportions in %, black boxes refer to the CI, numbers at the beginning of each bar indicate the number of students questioned in the corresponding state. n.s., not significant.