Table 2.

Distribution of tidal breathing parameters in the primary cohorta

Tidal breathing parameters	Median [min, max]
RR (brpm)	13.5 [8.7, 29.2]
tI (sec)	1.85 [0.90, 2.59]
tE (sec)	2.58 [1.04, 4.44]
tTot (sec)	4.54 [2.11, 6.95]
tI/tE	0.79 [0.56, 1.23]
tI/tTot	0.44 [0.36, 0.54]
IE50	1.17 [0.83, 2.15]

brpm, breaths per minute; IE50, inspiratory to expiratory flow ratio at 50% tidal volume; PNT, pneumotachography; RR, respiratory rate; tE, expiratory time; tI, inspiratory time; tI/tE, inspiratory/expiratory time ratio; tI/tTot, duty cycle; tTot, total breath time.

^aNote that the entries are calculated using the averaged timing index for each subject measured with PNT.