2.3.1. Intervention group
Participants for the intervention group had BLS HeartCode CD installed on a computer, a screen projector and Laerdal Resusci Anne that is without performance feedback to the learners during practice situated in a simulation lab within the hospital premises. Each participant also received a self-prepared manual with learning objectives and guidelines for learning. The training duration lasted for only 7 days and was done in the participants' leisure time. Participants learn through all the CPR knowledge and skills sections on their own and can choose how and where to start their learning activities using the video player's rewind, forward, and pause controls. A research assistant was only there to assist with the setting up of the manikins, Automated External Defibrillator machine and other administrative tasks. An immediate post-test evaluation was conducted, thereafter participants have no access to the DVD and the manikins until the next follow-up test at 1-, 3-, and 6 months. Flow-chart. Flow chart according to CONSORT (