Table 1.

Prevalence Rates of COPD in Different Age Groups

Age Group (Years)	Male			Female			Total
	Number	COPD	Prevalence (%)	Number	COPD	Prevalence (%)	Number	COPD	Prevalence (%)
24~40	24	1	4.17	45	4	8.89	69	5	7.25
40~	359	51	14.21	594	66	11.11	953	117	12.28
50~	367	60	16.35	547	68	12.43	914	128	14.00
60~	304	75	24.67	327	56	17.13	631	131	20.76
70~	214	69	32.24	182	54	29.67	396	123	31.06
Total	1268	256	20.19	1695	248	14.63	2963	504	17.01