Table 2– Mortality assessment of chronic obstructive pulmonary disease patients hospitalised with community-acquired pneumonia according to prior cardiovascular disease status

Mortality	Prior cardiovascular disease		Unadjusted		Adjusted^#
Mortality	No	Yes	HR (95% CI)	p-value	HR (95% CI)	p-value
30-day	782 (11.3)	1263 (12.3)	1.10 (1.01–1.20)	0.042	1.18 (0.73–1.10)	0.3
90-day	1342 (19.4)	2164 (21.1)	1.10 (1.03–1.18)	0.007	1.25 (1.03–1.53)	0.02
6-month	1800 (26.1)	2969 (29.0)	1.13 (1.06–1.20)	<0.001	1.27 (1.07–1.50)	0.006
12-month	2380 (34.5)	4012 (39.2)	1.17 (1.11–1.23)	<0.001	1.34 (1.16–1.54)	<0.001

Data are presented as n (%), unless otherwise stated. HR: hazard ratio. ^#: potential confounders, with p-values <0.1 in the univariate analyses, were age, race, marital status, smoker, alcohol abuse, peripheral vascular disorder, hemiplegia, diabetes (complicated and uncomplicated), malignancy, metastatic cancer, cerebrovascular disease and cardiovascular or diabetes medications.