Table 2.

Prevalence of Chronic Cough and Phlegm by Smoking History, Sex, and Age Group (for Subjects with Smoking Data Only)

Sex	Smoking History	40–49 Years (n=7723)	50–59 Years (n=7676)	60+ Years (n=6794)	Total (N=22,193)
Male	Never	1.1% (17/1578)	0.7% (9/1277)	2,2% (33/1499)	1.4% (59/4354)
	Past	0.9% (13/1524)	1.6% (33/2062)	1.8% (41/2272)	1.5% (87/5858)
	Current	3.1% (48/1535)	4.2% (61/1456)	4.6% (34/739)	3.8% (143/3730)
	Total	1.7% (78/4637)	2.1% (103/4795)	2.4% (108/4510)	2.1% (289/13,942)
Female	Never	0.4% (10/2389)	0.9% (22/2368)	1.5% (32/2101)	0.9% (64/6858)
	Past	1.0% (4/395)	0.3% (1/322)	3.3% (4/121)	1.1% (9/838)
	Current	1.7% (5/302)	2.1% (4/191)	8.1% (5/62)	2.5% (14/555)
	Total	0.6% (19/3086)	0.9% (27/2881)	1.8% (41/2284)	1.1% (87/8251)
Total	Never	0.7% (27/3967)	0.9% (31/3645)	1.8% (65/3600)	1.1% (123/11,212)
	Past	0.9% (17/1919)	1.4% (34/2384)	1.9% (45/2393)	1.4% (96/6696)
	Current	2.9% (53/1837)	3.9% (65/1647)	4.9% (39/801)	3.7% (157/4285)
	Total	1.3% (97/7723)	1.7% (130/7676)	2.2% (149/6794)	1.7% (376/22,193)

Note: Smoking history was unknown for 100 of 22,293 subjects.