Table 2.

Results.

Question	Mean		P-value
	Without application	With application
How confident were you performing CPR without having previous experience?	39.79	48.67	p = 0.002
How confident do you feel that the British Heart Foundation advert for ‘chest compression-only CPR’ improved your performance of CPR in this study?	39.52	48.64	p < 0.001
How confident do you feel about the number of compressions performed in this study being correct?	46.10	60.39	p < 0.001
How confident do you feel about your overall CPR performance?	43.92	50.41	p = 0.026
How confident do you feel about performing CPR and not causing harm to the patient?	39.12	39.94	p = 0.466
How confident do you feel about the depth of compressions performed in this study?	47.38	54.57	p = 0.21