Figure 1From: The acquisition and retention of ECG interpretation skills after a standardized web-based ECG tutorial–a randomised studyStudy design and flow of participants. All students that responded to the study invitation were randomised and could participate in the ECG session. The ECG session consisted of a pre-test, the ECG tutorial and a post-test. The participants also completed a retention-test after either short, medium or long follow-up as determined by randomisation. The only difference between the three follow-up groups was the length of the follow-up interval. The number of participants in each step of the study is indicated in the right side of the figure.Back to article page