Table 4.

Severity of COPD according to GOLD criteria

	Overall (n=9134)		Men (n=6635)		Women (n=2499)
	Cases (n)	Proportion (95% CI)	Cases (n)	Proportion (95% CI)	Cases (n)	Proportion (95% CI)
GOLD stage I (mild)	5153	56·4% (53·7–59·2)	3764	56·7% (53·9–59·5)	1389	55·6% (51·7–59·4)
GOLD stage II (moderate)	3313	36·3% (34·3–38·3)	2344	35·3% (33·3–37·3)	969	38·8% (35·5–42·0)
GOLD stage III (severe)	590	6·5% (5·5–7·4)	457	6·9% (5·8–8·0)	133	5·3% (4·1–6·5)
GOLD stage IV (very severe)	78	0·9% (0·6–1·1)	70	1·1% (0·8–1·4)	8	0·3% (0·1–0·5)

COPD=chronic obstructive pulmonary disease. GOLD=Global Initiative for Chronic Obstructive Lung Disease.