Abstract
Abstract
Objectives:
The paper describes the development and translation of a questionnaire purported to measure (1) the perception of the placement strategy of automated external defibrillator, (2) the perception on the importance of bystander cardiopulmonary resuscitation and automated external defibrillator (3) the perception on the confidence and willingness to apply these two lifesaving interventions as well as (4) the fears and concerns in applying these two interventions. For construct validation, iterative runs of exploratory factor analysis was performed using principal axis factoring and promax oblique rotation.
Results
Five factors with eigenvalue >1 were identified. Pattern matrix analysis showed that all items were loaded into the factors with pattern coefficient value >0.4. One item was subsequently removed as Cronbach’s alpha >0.9 which indicates redundancy. After removing the item, the Cronbach’s alpha values of all factors were still good, ranging from 0.8 to 0.9. Intra-class correlation coefficient was 0.831.