Hospital Mortality in the United States following Acute Kidney Injury

Table 1

Characteristics of patients with acute kidney injury in the United States, 2001 to 2011.

	All years	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	value
	18,870,662	674,845	752,472	891,353	1,125,378	1,299,289	1,522,004	1,818,011	2,236,412	2,581,314	2,817,647	3,151,937
Female (%)	47.6	47.42	47.37	48.02	47.99	47.69	47.35	47.45	47.85	47.56	47.44	47.65	0.46
Age (median)	72	72	72	72	72	72	72	72	72	71	71	71	0.72
Age (IQR)	58–81	59–81	59–81	59–81	59–81	58–81	58–81	58–81	59–82	58–81	58–81	58–82	0.72
Length of stay (median)	6	7	7	7	7	6	6	6	6	5	5	5	<0.001
Length of stay (IQR)	3–11	4–13	4–13	4–13	3–12	3–12	3–11	3–11	3–10	3–10	3–10	3–9	<0.001
Heart failure (%)	22.78	23.68	23.99	24.42	25.22	25.37	24.75	23.65	21.43	21.18	21.06	22.04	<0.001
Pulmonary disease (%)	3.53	1.33	1.51	1.54	1.56	1.61	2.1	3.25	3.94	4.19	4.59	5.03	<0.001
Peripheral vascular disease (%)	8.94	6.34	7.2	6.88	6.85	6.73	7.42	8.37	9.43	9.59	9.36	10.89	<0.001
Hypertension (%)	52.86	22.91	26.78	44.15	45.44	46.4	49.19	48.69	53.42	56.73	58.14	61.21	<0.001
Neurological disease (%)	9.61	3.62	9.2	7.55	7.81	7.79	8.3	9.3	9.79	10.05	10.3	11.12	<0.001
Chronic pulmonary disease (%)	23.4	20.9	22.23	22.62	22.91	23.8	24.31	24.36	22.36	22.9	22.84	24.11	0.29
Diabetes (%)	23.72	17.12	18.6	19.18	19.56	19.36	21.17	22.71	24.15	25.65	25.97	27.26	<0.001
Diabetes with sequelae (%)	10.94	9.55	10.86	10.61	10.17	10.32	10.83	11.23	10.75	10.53	10.41	11.57	0.28
Obesity (%)	9.26	2.94	3.9	4.17	4.37	4.89	5.96	7.35	9.8	11.09	11.26	14.08	<0.001
Anemia (%)	30.47	20.19	22.85	23.86	23.6	23.58	26.27	28.9	32.11	32.84	32.48	35.87	<0.001
Sepsis (%)	20.8	19.31	19.87	19.65	19.88	20.35	20.58	20.55	20.87	20.52	20.58	21.12	<0.001
In-hospital mortality (%)	12.32	21.92	20.38	18.76	16.76	15.38	14.09	12.36	11.8	10.49	9.74	9.07	<0.001