Table 3.

Principal Results as a Function of Tube Size.

	7.0 mm	7.5 mm	8.0 mm	8.5 mm	P
Patients with measured cuff pressure >30 cmH2O (%)	57	57	47	30	0.444
Measured Cuff Pressure (mmHg)	32 [22, 52]	38 [24, 49]	30 [16, 38]	24 [21, 40]	0.467
Measured Cuff Volume (ml)	3.9 [3.0, 5.0]	4.5 [2.7, 5.0]	4.6 [3.5, 6.1]	3.8 [3.0, 5.0]	0.616
Volume Required for 20 cmH2O (ml)	2.6 [2.0, 3.1]	2.5 [1.8, 3.0]	3.0 [2.5. 4.1]	3.3 [2.0, 3.9]	0.143

Results presented as medians [interquartile range] or percent.