Table S1.

Logistic regression of COPD with ADL disability among those without cardiovascular diseases or osteoarthritis

	BADL			IADL
OR	95% CI	p	OR	95% CI	p
Those without heart disease
Male
Disability	1.341	1.014–1.868	0.034	4.212	1.231–5.410	<0.001
Moderate to severe disability	1.184	0.693–2.025	0.537	3.534	2.462–5.072	<0.001
Female
Disability	1.205	0.833–1.742	0.322	0.863	0.538–1.383	0.662
Moderate to severe disability	1.136	0.720–1.791	0.584	1.224	0.816–1.836	0.328
Total
Disability	1.266	1.070–1.551	0.032	2.571	1.836–3.601	<0.001
Moderate to severe disability	1.139	0.805–1.612	0.461	2.254	1.716–2.961	<0.001
Those without osteoarthritis
Male
Disability	1.550	1.098–2.189	0.013	4.745	3.063–7.351	<0.001
Moderate to severe disability	1.190	0.731–1.937	0.484	3.121	2.233–4.363	<0.001
Female
Disability	1.388	0.980–1.966	0.065	1.120	0.715–1.753	0.621
Moderate to severe disability	1.356	0.883–2.084	0.164	1.351	0.924–1.976	0.121
Total
Disability	1.455	1.139–1.858	0.003	2.653	1.937–3.634	<0.001
Moderate to severe disability	1.252	0.908–1.728	0.171	2.181	1.693–2.810	<0.001

Notes: Model 1: adjusted by age; Model 2: adjusted ethic, residence, marriage, education, besides those adjusted in Model 1; Model 3: adjusted smoking, alcohol drinking, physical exercise, self-rated good health, besides those adjusted in Model 2.

Abbreviations: ADL, activity of daily living; BADL, activity of daily living; IADL, instrumental activity of daily living.