Table 2. Individual patient characteristics.

No.	Age (years)	Sex	FEV1 (% predicted)	COPD stage	Years of bronchitis	PY/occupational exposure	Atopy	Eosinophils × 106/l
1	64	m	74	III	10	0/Dust	No	130
2	57	m	74	II	30	45	No	290
3	53	f	85	I	2	20	No	300
4	76	f	29	IV	25	40	No	260
5	77	m	50	II	20	20	No	70
6	58	f	48	III	7	20	No	†
7	58	f	80	I	2	0/Dust	No	290
8	67	f	70	II	3	20	No	150
9	62	m	80	I	4	25	No	160
10	59	f	89	I	5	15	No	120
11	64	f	77	II	3	0/unknown	No	140
12	75	m	23	IV	10	80	No	150
13	73	f	68	II	11	15	No	200
14	73	m	67	II	18	38	No	270
15	65	f	46	III	15	50	No	170
16	68	m	26	IV	10	40	No	50

FEV₁, forced expiratory volume in one second; PY, pack years; m, male; f, female.

^*No leucocyte differential for this patient.