Table 1. Comparison of symptoms between non-COPD and COPD participants and within gender.

	non-COPD			COPD			P value
	Total	Men	Women	Total	Men	Women	Total	Men	Women
Population	493 (83.8%)	246 (49.9%)	247 (50.1%)	95 (16.2%)	45 (47.4%)	50 (52.6%)
Age	44.9 (13.5)	44.9 (13.1)	44.9 (14.0)	46.6 (13.9)	45.5 (11.5)	47.7 (15.5)	0.258	0.793	0.211
Cough	89 (18.1%)	40 (16.3%)	49 (19.8%)	29 (30.5%)	15 (33.3%)	14 (28.0%)	0.005	0.007	0.198
Phlegm	102 (20.7%)	48 (19.5%)	54 (21.9%)	21 (22.1%)	13 (28.9%)	8 (16.0%)	0.756	0.155	0.352
Wheeze	32 (6.5%)	16 (6.5%)	16 (6.5%)	16 (16.8%)	9 (20.0%)	7 (14.0%)	0.001	0.003	0.070
Chest infections							0.381	0.007	0.541
None	50 (10.1%)	30 (12.2%)	20 (8.1%)	9 (9.5%)	4 (8.9%)	5 (10.0%)
1–2 per year	272 (55.2%)	134 (54.5%)	138 (55.9%)	46 (48.4%)	15 (33.3%)	31 (62.0%)
>2 per year	171 (34.7%)	82 (33.3%)	89 (36.0%)	40 (42.1%)	26 (57.8%)	14 (28.0%)

Data are N (%) or mean (s.d.).

Abbreviation: COPD, chronic obstructive pulmonary disease.