Table 1—

Subject characteristics

Patient No.	Subject characteristics								Best value in last 12 months
Patient No.	Age yrs	Sex	Smoker pack-yrs	Atopy	P mg·d⁻¹	ICS µg·d⁻¹	LABA	FEV1 % pred V1	FEV1 % pred	FEV1/VC %	FEV1 ΔS mL	FEV1 ΔS %	FEV1 ΔP mL	FEV1 ΔP %
1	58	M	20	No	9	1600	No	48	76	46	410	23	1230	55
2	60	M	76	Yes	20	3200	Yes	47	100	60	270	12	230	10
3	68	F	0	Yes	7.5	1600	Yes	64	71	59	150	12	250	21
4	67	M	4	Yes	10	2400	Yes	50	68	65	220	25	320	30
5	73	M	0	No	4	800	No	38	64	59	330	24	370	27
6	42	M	0	Yes	10	3200	No	66	71	55	150	6	880	53
7	58	M	1.6	No	10	1600	No	29	40	36	310	33	100	9
8	45	F	0	Yes	0	2400	No	75	92	78	0	0	640	48
9	64	F	10	No	12.5	1200	Yes	51	55	43	180	18	180	15
10	74	M	5	Yes	0	1600	No	54	79	66	480	23	530	21
11	69	F	10	No	12.5	1600	Yes	68	72	63	360	23	ND	ND
12	72	F	1	Yes	0	1600	Yes	72	86	68	280	11	490	16
13	54	F	0	Yes	5	1600	Yes	55	66	58	320	37	220	17
14	52	M	0	Yes	5	1600	No	89	111	77	380	18	1030	42
Mean±sd	61.1±10.2				7.5±5.7	1857.1±694.7		61.5±15.4	75±18	59.5±11.9	274.3±125.2	18.9±10	487.9±342	27.8±15.6

Atopy: ≥1 positive (≥3 mm) weal with allergy skin-prick tests; P: prednisone; ICS: inhaled corticosteroid (budesonide equivalent dose); LABA: long-acting β₂-agonist; FEV1: forced expiratory volume in one second; V1: visit one; VC: vital capacity; ΔS: change with salbutamol 200 µg; ΔP: change with added prednisone; M: male; F: female; ND: not done.