2.4. Data collection
The instruments for the data collection method were both administering questionnaires and the checklist for skills tests using the manikins. The self-administrated questionnaire was adapted from a previous study with 3 sections, where the first section was socio-demographic data of the nurses as well as a profile of their working experiences; second section assessed the CPR knowledge level with 25 closed-ended multiple-choice questions (MCQs) adapted from the AHA manual for healthcare providers with only four options (A to D) (