COPD uncovered: an international survey on the impact of chronic obstructive pulmonary disease [COPD] on a working age population

Table 2 Clinical and demographic data of respondents

Group [%]	Sub-group	N [2,426]	Males
Country	Brazil	408 [17]	148 [36]
	USA	404 [17]	168 [42]
	Germany	400 [16]	167 [42]
	UK	400 [16]	208 [52]
	China	398 [16]	283 [71]
	Turkey	416 [17]	206 [49]
Total		2426	1180 [49]
Age	45-54	1029 [42]
	55-64	971 [40]
	65-67	426 [18]
Working Status		n [%]	Males [%]
n = 2400 [%]	Working	710 [29]	360 [51]
	Not working	1243 [51]	599 [48]
	Retired early due to COPD*	447 [18]	208 [47]
	Missing	26 [1]
Severity: [MRC Dyspnoea Scale]	Mild [1, 2]	849 [35]
	Moderate [3, 4]	1,012 [42]
	Severe [5]	521 [22]
	Missing data	44 [2]
Ever smoked on a daily basis	Yes	2311 [95]
	No	115 [5]
Currently smoke	Yes	1366 [59]
	No	1060 [41]
	Mean Pack Years	38
Number of co-morbidities by number of respondents [n = 2,404]	0	595 [25]
	1	753 [31]
	2	443 [18]
	3	265 [11]
	> 4	348 [14]
	Missing data	22 [1]

ISSN: 1471-2458