Table 1—

Patient characteristics and spirometry

	Sex	Age yrs	FEV₁ L	FEV₁ % pred	FEV₁/FVC	Smoking pack-yrs
Severe asthma
1	F	47	3	114	82	5
2	M	45	2	51	66	15
3	F	36	2.9	88	66	5
4	M	52	1.4	41	40	0
5	F	47	0.8	34	47	0
6	F	53	2.4	94	80	0
7	F	59	1	48	73	0
8	M	66	1.2	44	76	20
9	M	51	3.6	92	67	0
10	M	53	1.9	55	54	0
11	M	55	1.9	58	66	20
12	F	40	1.0	33	47	0
13	M	22	3.8	81	76	2
14	M	50	2.5	58	89.8	30
Mean±se		48	2.1±0.3	63.6±6.8	66.4±3.9
Moderate asthma
1	M	49	2.5	67	70	5
2	F	50	2.2	82	72	3
3	F	61	2	100	76	20
4	F	55	2.1	84	72	0
5	M	55	3.1	77	78	10
6	F	23	2.9	95	73	0
7	M	42	3.1	78	62	12
8	M	60	2.5	74	63	0
9	F	47	2.5	85	79	2
10	M	49	4.4	119	82	0
11	M	55	5.2	121	74	0
12	M	39	2.1	78	71	0
13	M	50	2.7	77	77	17
Mean±se		49	2.9±0.3	87.5±4.7	73.0±1.6
Control
1	M	29	5.68	125	83	0
2	M	43	4.7	125	85	0
3	F	63	1.95	81	69	0
4	F	22	3.38	107	81	0
5	F	20	3.31	100	95	0
6	M	28	4.7	121	88	0
Mean±se		34	3.96±0.5	109.8±7.1	83.5±3.5

FEV₁: forced expiratory volume in one second; % pred: % predicted; FVC: forced vital capacity; F: female; M: male.