Figure 2.

Descriptive analysis of primary and secondary outcomes. The figure shows percentages of students correctly identifying at least three out of five diagnoses in the electrocardiogram (ECG) exit examination (black columns), self-reporting to have spent more than 2 h/week on independent ECG self-study (dark gray columns) and of having used additional ECG learning material during the module (light gray columns) by study group. Error bars indicate 95% confidence intervals of prevalence estimates.

Raupach et al. BMC Medicine 2013 11:61   doi:10.1186/1741-7015-11-61
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