Table 5.

Barriers analysed in each of the included studies.

BARRIERS	STUDIES
Lack of knowledge	Cheskes et al. [22]; Shams et al. [32]; Lee et al. [26]
Fear of litigation/legal responsibilities	Cheskes et al. [22]; Pei-Chuan Huang et al. [28]; Lee et al. [26]; Pei-Chuan Huang et al. [29]; Qian et al. [34]
Lack of skill confidence	Cheskes et al. [22]; Pei-Chuan Huang et al. [29]
Fear of disease transmission	Shams et al. [32]; Liaw et al. [35]; Qian et al. [34]
Injuring victim due to performing CPR	Shams et al. [32]; Pei-Chuan Huang et al. [28]; Liaw et al. [35]; Qian et al. [34]
Injuring own self due to performing CPR	Liaw et al. [35]
Injuring victim due to using AED	Liaw et al. [35]; Lee et al. [26]; Pei-Chuan Huang et al. [29]
Not interested in AED	Lee et al. [26]
Injuring own self due to using AED	Liaw et al. [35]
Poor hygiene of victim	Shams et al. [32]
Presence of vomit or blood	Shams et al. [32]
Performing mouth-to-mouth artificial respiration	Qian et al. [34]
Concern that peoples around them will complain	Qian et al. [34]
Unwillingness to touch strangers	Qian et al. [34]