Table 3.

Model study: protocol B

Parameter	R = 8			R = 16			R = 32
	C = 20	C = 50	C = 100	C = 20	C = 50	C = 100	C = 20	C = 50	C = 100
Leakpause (ml)	96 ± 9	99 ± 6	96 ± 9	105 ± 10	103 ± 11	110 ± 8	123 ± 12c	115 ± 9	118 ± 12c
Leakconv (ml)	275 ± 11a	257 ± 9	245 ± 8	278 ± 6ab	261 ± 10	253 ± 9	287 ± 13ab	268 ± 7	255 ± 6

Results are means ± SD. C, model compliance (ml/cmH₂O); Leak_conv, cuff-leak volume measured when the cuff remained deflated during both inspiration and expiration; Leak_pause, cuff-leak volume measured when the cuff was deflated at the end of 3 s of inspiratory pause; R, model resistance (cmH₂O/litre per second).

^aSignificantly different from the corresponding value at C = 100 ml/cmH₂O.

^bSignificantly different from the corresponding value at C = 50 ml/cmH₂O.

^cSignificantly different from the corresponding value at R = 8 cmH₂O/litre per second.