Table 1.

Characteristics* of participants newly diagnosed with chronic obstructive pulmonary disease by case-finding and usual care

		Diagnostic route
		Case-finding (n=857)		Usual care (n=764)
		N	(%)	N	(%)
Age (years)	Mean (SD)	63.8	9.6	63.7	9.7
	40–49	91	10.6	76	9.9
	50–59	190	22.2	184	24.1
	60–69	320	37.3	275	36
	70+	256	29.9	229	30
Sex	Male	489	57.1	418	54.7
Ethnic group	White British	556	64.9	507	66.4
	Mixed	5	0.6	5	0.7
	Asian	28	3.3	11	1.4
	African/ Caribbean	14	1.6	24	3.1
	Other	17	2	3	0.4
	Unknown	237	27.7	214	28
Smoking status	Current	259	30.2	417	54.6
	Former	372	43.4	255	33.4
	Never	124	14.5	15	2
	Unknown	102	11.9	77	10.1
Comorbidities†	Asthma	71	20.6	46	24.5
	Ischaemic heart disease	44	12.8	26	13.8
	Heart failure	9	2.6	7	3.7
	Diabetes	58	16.9	30	16
	Depression	19	5.5	19	10.1
	Anxiety	10	2.9	5	2.7
	Osteoporosis	12	3.5	8	4.3
	Stroke	6	1.7	6	3.2
	No comorbidities	172	50	84	44.7
	1 comorbidity	123	35.8	71	37.8
	≥2 comorbidities	49	5.7	33	4.3

*Based on data from electronic healthcare records.

†Based on a subset of patients (344 patients diagnosed by case-finding and 188 diagnosed by usual care).