School children sufficiently apply life supporting first aid: a prospective investigation

Table 3 Primary outcome variables

Effectiveness parameter	Median	IQR	Min	Max
Depth of chest compressions*	35 mm	31 to 41 mm	8 mm	56 mm
Number of chest compressions per minute	129 bpm	108 to 143 bpm	51 bpm	203 bpm
Volume inflated during mouth-to-mouth resuscitation	540 ml	0 to 750 ml	0 ml	1790 ml
Time until AED shock	69 s	55 to 84 s	25 s	150 s
	Correct	%
Correct head tilt and chin lift during artificial ventilation	102	69%
Number of students who correctly deployed the AED	137	93%

*Presented as medians and inter-quartile ranges (IQR), even if the data were nearly normally distributed. Data are displayed as absolute numbers or percentages of correctly shown checklist items. In absence of a normal distribution, median, interquartile range, and range are given (n = 147).
AED = automatic external defibrillators.

ISSN: 1364-8535