Here is a list of different scientific studies of online learning compared to traditional learning.STUDIES Study 1 Retention of CPR skills learned in a traditional AHA Heartsaver course versus 30-min video self-training: a controlled randomized study. Study 2 Can e-learning replace classroom learning ? Study 3 A randomised controlled comparison of video versus instructor-based compression only life support training. Study 4 Cardiopulmonary resuscitation performance of subjects over forty is better following half-hour video self-instruction compared to traditional four-hour classroom training. Study 5 CPR training without an instructor: development and evaluation of a video self-instructional system for effective performance of cardiopulmonary resuscitation. Study 6 Interactive video instruction improves the quality of dispatcher-assisted chest compression-only cardiopulmonary resuscitation in simulated cardiac arrests. Study 7 Passive ultra-brief video training improves performance of compression-only cardiopulmonary resuscitation. Study 8 Quality of CPR performed by trained bystanders with optimized pre-arrival instructions. Study 9 The impact of ultra-brief chest compression-only CPR video training on responsiveness, compression rate, and hands-off time interval among bystanders in a shopping mall. Study 10 Viewing a brief chest-compression-only CPR video improves bystander CPR performance and responsiveness in high school students: A cluster randomized trial.