Table 1.

Tidal volume, ventilation rate and chest compression quality.

	Without feedback	With feedback	p Value
Tidal volume
Hypoventilation	22 (20.75%)	3 (2.83%)
Within recommendations	24 (22.65%)	100 (94.34%)
Hyperventilation	60 (56.60%)	3 (2.83%)
Median tidal volume (mls)	630 (IQR 518–725, range 201–1114)	546 (IQR 531–560, range 490–750)
Ventilation rate
Hypoventilation	13 (12.20%)	2 (1.88%)
Within recommendations	54 (51%)	100 (94.34%)
Hyperventilation	39 (36.80%)	4 (3.78%)
Median ventilation rate (per minute)	10 (IQR 8–14, range 4–30)	9 (IQR 9–9, range 6–17)
Compression quality (% of participants in range of recommendations)
Median depth	73%	76%	0.151
Median rate	19%	40%	0.009
Median fraction	100%	100%	0.493