Table 2.

Process and outcome variables in patients with COPD versus in those without, 2010–2012

Variable	COPD				P-value	OR (95% CI)
	No (N=2,276)		Yes (N=472)
	n	%	n	%
Complications
Severity of complications					<0.001
No	1,193	52.4	177	37.5
Minor	481	21.1	114	24.2		1.597 (1.234–2.068)
Major	602	26.4	181	38.3		2.027 (1.611–2.549)
Infectious (major)					<0.001
No	2,021	88.8	388	82.2
Yes	255	11.2	84	17.8		1.716 (1.311–2.246)
Hemorrhagic (major)					0.286
No	2,159	94.9	442	93.6
Yes	117	5.1	30	6.4		1.252 (0.828–1.895)
Surgical (major)					<0.001
No	2,004	88.0	380	80.5
Yes	272	12.0	92	19.5		1.784 (1.375–2.315)
Vascular (major)					0.035
No	2,166	95.2	438	92.8
Yes	110	4.8	34	7.2		1.529 (1.027–2.276)
Medical (major)					<0.001
No	2,141	94.1	409	86.7
Yes	135	5.9	63	13.3		2.443 (1.779–3.355)
Use of resources
Intensive care unit admission					<0.001
No	1,743	76.6	325	68.9
Yes	533	23.4	147	31.1		1.479 (1.190–1.839)
Invasive mechanical ventilation					0.027
No	2,221	97.6	452	95.8
Yes	55	2.4	20	4.2		1.787 (1.061–3.011)
In-hospital antibiotic treatment (postintervention)					0.001
No	1,274	56.0	223	47.2
Yes	1,002	44.0	249	52.8		1.420 (1.164–1.732)
Blood transfusion					0.444
No	1,702	74.8	345	73.1
Yes	574	25.2	127	26.9		1.092 (0.872–1.366)
Reintervention					0.010
No	2,106	92.5	420	89.0
Yes	170	7.5	52	11.0		1.534 (1.105–2.129)
Postintervention LOS (days)					<0.001
1–7	1,104	48.5	164	34.7
8–15	799	35.1	194	41.1		1.634 (1.303–2.051)
16–30	278	12.2	78	16.5		1.889 (1.399–2.549)
>30	93	4.1	36	7.6		2.606 (1.715–3.959)
In-hospital death					<0.001
No	2,256	99.1	451	95.6
Yes	20	0.9	21	4.4		5.252 (2.824–9.770)

Abbreviations: LOS, length of stay; OR, odds ratio; 95% CI, 95% confidence interval.