Table 1.

Patient characteristics.

Category	Agreed to interview	Declined interview	No reply
Participants	16	78	16
Male	12	38	7
Female	4	40	9
Smokers	2	26	9
Ex-smokers	14	52	7
Average age, years (SD)	66.8 (6.9)	71.0 (8.6)	72.0 (9.7)
Mild disease (FEV1 80–50%)	9	59	13
Moderate disease (FEV1 49–30%)	5	17	3
Severe disease (FEV1 <30%)	2	1	0

FEV1 = forced expiratory volume in the first second.