Fig. 4
a Correlation between OSCEdiag and OSCEreason scores of classroom tutoring participants; b-c The mean cumulating learning hours of classroom tutoring participants with stepwise increasing ranges of overall OSCEdiag and OSCEreason scores (horizontal black line in the dot plot indicated mean); d Comparison of the proportion (%) of classroom tutoring participants that having high cumulative learning hours (>30-h) between high (>400) and low (<400) OSCEdiag and OSCEreason score’s groups