Data analysis
The collected data were analyzed using SPSS software version 25. Kolmogorov-Smirnov and Shapiro Wilk tests were used to determine the normal distribution of data. Mann-Whitney test was used to compare the mean basic life support skill between the two groups of real-time feedback and debriefing by video recording before and after the intervention. Paired t-test was also used to compare the means in both groups before and after the intervention.