Table 2

Degree of expiratory flow limitation (as % spontaneous tidal volume, %Vt) when seated and supine at both pressure levels

	Patient no	Seated −5 cm H₂O (%Vt)	Seated −10 cm H₂O (%Vt)	Supine −5 cm H₂O (%Vt)	Supine −10 cm H₂O (%Vt)
Group 1	1	0	0	57	59
	2	43	0	48	40
	3	0	0	56	68
	4	0	0	81	93
	5	0	0	100	90
	6	0	70	81	89
	10	0	0	26	43
	12	12	0	32	20
	15	0	0	42	41
	16	0	0	21	53
	17	0	41	61	53
	18	94	89	96	96
	19	0	0	53	53

Group 2	7	0	0	0	0
	8	0	0	0	0
	9	0	0	0	0
	11	0	0	0	0
	13	0	0	0	0
	14	0	0	0	0