Table 2.

Multivariable logistic regression model for 6-month mortality

Characteristics		OR	95% CI	P-value
Year	2006 (vs. 2005)	1.10	0.94–1.29	0.234
	2007	1.04	0.89–1.22	0.589
	2008	1.05	0.90–1.22	0.511
	2009	1.01	0.87–1.18	0.851
	2010	1.10	0.95–1.28	0.208
	2011	0.97	0.84–1.11	0.631
	2012	1.00	0.87–1.15	0.998
Age (yr)	65–74 (vs. <65)	1.95	1.77–2.15	< 0.001
	75–84	3.68	3.34–4.05	< 0.001
	≥ 85	9.25	8.18–10.45	< 0.001
Sex, female		0.70	0.66–0.76	< 0.001
Charlson comorbidity index	1 (vs. 0)	1.08	0.98–1.18	0.104
	2 (vs. 0)	2.39	2.16–2.65	< 0.001
	> 2 (vs. 0)	4.22	3.81–4.66	< 0.001
ER visit (vs. all other presentation)		1.12	1.03–1.21	0.005
Medical departments (vs. all others)		2.09	1.89–2.31	< 0.001
Income level	Lower-middle (vs. lower)	1.04	0.92–1.17	0.563
	Middle	1.01	0.90–1.13	0.904
	Upper-middle	0.92	0.82–1.02	0.115
	Upper	0.85	0.77–0.94	0.001
Hospital size (beds)	100–299 (vs. <100)	1.12	0.89–1.42	0.329
	300–599	0.75	0.59–0.96	0.019
	600–999	0.55	0.43–0.69	< 0.001
	≥ 1,000	0.51	0.40–0.65	< 0.001
No. of organ dysfunctions	2 (vs. 1)	2.90	2.65–3.17	< 0.001
	3	6.30	5.45–7.28	< 0.001
	≥4	10.28	8.18–12.91	< 0.001
Site of infection	CNS (vs. respiratory)	1.69	1.12–2.55	0.012
	Gastrointestinal	0.69	0.62–0.77	< 0.001
	Genitourinary	0.48	0.41–0.57	< 0.001
	Musculoskeletal, skin & soft tissue	0.47	0.37–0.60	< 0.001
	Endocarditis	0.93	0.48–1.79	0.829
	Device-related	0.19	0.07–0.47	< 0.001
	Unspecified	1.30	1.17–1.46	< 0.001
Septic shock (vs. no septic shock)		1.79	1.64–1.95	< 0.001

OR, odds ratio; CI, confidence interval; ER, emergency room; CNS, central nervous system.