Table 1.

Characteristics of the participants (n=10 160)

	Healthy lung function		Impaired lung function*
	Men n=3736	Women n=4657	Men n=883	Women n=884
Age, mean (SD)	59.16±7.44	58.59±7.39	60.05±7.10	59.38±7.23
Height (m), mean (SD)	1.73±0.06	1.60±0.06	1.72±0.06	1.59±0.06
Smokers, n (%)	2377 (63.62)	1671 (35.88)	696 (78.82)	412 (46.61)
Non-smokers, n (%)	1359 (36.38)	2986 (64.12)	187 (21.18)	472 (53.39)
Country
Czech Republic, n (%)	1270 (33.99)	1742 (37.41)	294 (33.30)	314 (35.52)
Poland, n (%)	1453 (38.89)	1556 (33.41)	433 (49.04)	429 (48.53)
Lithuania, n (%)	1013 (27.11)	1359 (29.18)	156 (17.67)	141 (15.95)

*Sex-specific pulmonary function standardised for age and height