Participants flow, recruitment, and baseline characteristics
SD
In total, 207 emails were sent to the university students (this was the total number of the students on the campus). One hundred and fifty of them responded that they would like to participate our study, so 150 participants were assessed for eligibility. None of the participants were excluded before the randomization. Therefore, 150 participants were randomized: 50 to the V-CPR group, 50 to the T-CPR group, and 50 to the U-CPR group. Three of the participants were excluded (two from the U-CPR group and one from the T-CPR group) because of a technical issue during data collection [the CPR software did not record data]). After exclusions, the total number of participants was 147, respectively. The study flowchart is visible in Fig. CONSORT diagram. U-CPR, unassisted cardiopulmonary resuscitation; T-CPR, telephone-assisted cardiopulmonary resuscitation; V-CPR, video-assisted cardiopulmonary resuscitation.Most of the participants were female (103, 70.1%). The mean age was 20.3 years (SD = 1.4), and the mean BMI was 23.1 kg/mBasic characteristics of the participants.U-CPR, unassisted cardiopulmonary resuscitation; T-CPR, telephone-assisted cardiopulmonary resuscitation; V-CPR, video-assisted cardiopulmonary resuscitation; SD, standard deviation; BMI, body mass index.