Table S2.

Tests typically used to establish a COPD diagnosis by country and by physician type

	USA n=200		Mexico n=101		Brazil n=101		France n=100		Germany n=100		Italy n=100		Spain n=100		UK n=100		NL n=101		Russia n=100		Japan n=101		SK n=103
	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS	PC	RS
Spirometry
Yes	84	100	84	100	93	100	50	100	96	100	15	100	96	100	100	100	96	100	100	100	79	100	83	96
No	5	0	1	0	1	0	4	0	1	0	3	0	0	0	0	0	1	0	0	0	4	0	0	4
Not available	11	0	15	0	5	0	46	0	3	0	82	0	4	0	0	0	3	0	0	0	16	0	17	0
Peak expiratory flow
Yes	63	35	61	54	49	38	77	50	77	88	18	50	59	28	72	16	41	26	38	35	45	71	50	33
No	30	65	15	46	33	58	12	50	16	12	43	50	28	72	28	84	55	74	34	8	27	18	28	63
Not available	7	0	24	0	17	4	11	0	7	0	39	0	13	0	0	0	4	0	27	58	27	11	22	4
Bronchodilator responsiveness
Yes	66	80	69	81	73	77	76	85	88	100	24	85	76	92	76	48	68	74	89	100	53	57	57	78
No	27	20	19	19	21	23	18	15	9	0	41	8	13	8	21	52	27	26	9	0	38	25	33	22
Not available	7	0	12	0	5	0	7	0	3	0	35	4	11	0	3	0	5	0	0	0	8	18	11	0
Oral corticosteroid responsiveness
Yes	32	29	55	23	44	35	46	23	52	64	28	42	35	32	37	4	35	11	14	23	36	39	50	7
No	60	71	31	73	49	62	45	77	44	36	55	54	53	68	60	88	62	89	57	12	60	50	39	89
Not available	7	0	15	4	7	4	9	0	4	0	16	4	12	0	3	8	3	0	26	62	4	11	9	4
Chest X-ray
Yes	84	86	91	92	84	92	58	88	59	80	5	77	91	96	84	84	55	81	99	96	96	100	91	93
No	12	14	7	8	12	8	16	12	15	20	15	8	8	4	13	16	30	15	1	4	3	0	3	7
Not available	4	0	3	0	4	0	26	0	27	0	80	15	1	0	3	0	15	4	0	0	1		7	0
Blood test/oximetry
Yes	38	84	80	73	53	62	30	85	33	84	4	58	53	68	37	40	26	44	92	85	78	86	22	52
No	53	16	13	15	29	35	28	12	24	16	19	27	29	32	49	60	53	48	8	12	12	11	43	44
Not available	9	0	7	12	17	4	42	4	43	0	76	15	17	0	13	0	22	7	0	4	10	4	34	4
CAT/CT/MRI scans
Yes	15	33	24	42	37	46	19	54	12	48	1	35	12	56	4	16	5	4	39	88	67	79	28	41
No	68	67	47	54	43	42	47	42	49	52	59	46	53	44	72	80	72	89	55	12	8	14	41	52
Not available	16	0	29	4	20	12	34	4	39	0	38	15	35	0	24	4	23	7	0	0	25	7	32	7
Patient-reported outcomes
Yes	75	82	84	92	95	92	65	65	79	84	53	96	55	92	64	60	78	81	59	88	37	71	54	70
No	19	18	13	8	4	8	31	27	16	16	38	4	39	8	32	36	19	19	39	12	53	29	38	26
Not available	5	0	3	0	1	0	4	8	5	0	8	0	7	0	4	4	3	0	0	0	10	0	8	4

Abbreviations: COPD, chronic obstructive pulmonary disease; NL, the Netherlands; SK, South Korea; PC, primary care; RS, respiratory specialist; CAT, computerized axial tomography; CT, computerized tomography; MRI, magnetic resonance imaging.