Variations in hospital standardised mortality ratios (HSMR) as a result of frequent readmissions

van den Bosch, Wim F; Spreeuwenberg, Peter; Wagner, Cordula

doi:10.1186/1472-6963-12-91

BMC Health Services Research

Table 1 A comparison of SMR outcomes of model 1 and model 2

From: Variations in hospital standardised mortality ratios (HSMR) as a result of frequent readmissions

CCS code	CCS-diagnostic group title	Number of admissions	Distance between model 1 and 2 (R²)	Number of hospitals with SMR significantly high?		c-statistic for
				Model 1: no model 2: yes	Model 1: yes model 2: no	Model 1	Model 2
2	Septicemia (except in labour)	14647	0.83	2	1	0.760	0.783
12	Cancer of oesophagus	9703	0.74	1	3	0.730	0.763
13	Cancer of stomach	13945	0.75	0	2	0.733	0.779
14	Cancer of colon	45116	0.77	2	5	0.773	0.814
15	Cancer of rectum and anus	22246	0.72	1	3	0.771	0.817
17	Cancer of pancreas	9950	0.76	1	0	0.685	0.704
19	Cancer of bronchus, lung	76714	0.75	4	6	0.792	0.822
24	Cancer of breast	64126	0.74	2	1	0.916	0.850
29	Prostate cancer	24092	0.76	3	1	0.886	0.865
32	Cancer of bladder	44288	0.71	1	0	0.872	0.874
38	Non-Hodgkin's lymphoma	19413	0.69	0	5	0.802	0.841
39	Leukaemias	12466	0.77	0	1	0.781	0.820
42	Secondary malignancies	69303	0.77	5	4	0.748	0.770
44	Neoplasms unspec nature or uncertain behaviour	18982	0.63	2	1	0.805	0.840
50	Diabetes mellitus with complications	36837	0.74	1	0	0.824	0.846
55	Fluid and electrolyte disorders	29705	0.81	0	1	0.795	0.824
59	Deficiency and other anaemia	48896	0.61	0	1	0.756	0.802
85	Coma, stupor and brain damage	4286	0.92	0	0	0.801	0.815
96	Heart valve disorders	30708	0.77	1	2	0.775	0.788
100	Acute myocardial infarction	91802	0.72	1	1	0.740	0.781
101	Coronary atherosclerosis and other heart disease	250183	0.66	1	2	0.784	0.805
103	Pulmonary heart disease	26937	0.78	0	1	0.754	0.776
106	Cardiac dysrhythmias	174923	0.72	1	2	0.828	0.860
107	Cardiac arrest and ventricular fibrillation	8118	0.89	2	2	0.739	0.764
108	Congestive heart failure, non-hypertensive	108541	0.63	4	1	0.637	0.702
109	Acute cerebrovascular disease	102295	0.86	3	0	0.744	0.761
114	Peripheral and visceral atherosclerosis	44090	0.94	1	3	0.908	0.914
115	Aortic, peripheral and visceral artery aneurysms	26538	0.93	1	1	0.871	0.887
116	Aortic & peripheral arterial embolism or thrombosis	32881	0.75	1	1	0.882	0.892
117	Other circulatory disease	20452	0.80	0	1	0.849	0.862
122	Pneumonia	128867	0.74	2	0	0.753	0.785
127	COPD and bronchiectasis	82898	0.60	0	2	0.701	0.761
129	Aspiration pneumonitis	4485	0.79	1	1	0.644	0.688
130	Pleurisy, pneumothorax, pulmonary collapse	24798	0.78	0	0	0.812	0.827
133	Other lower respiratory disease	99460	0.77	1	0	0.854	0.866
145	Intestinal obstruction without hernia	34802	0.76	1	1	0.813	0.836
146	Diverticulosis and diverticulitis	35917	0.70	0	0	0.814	0.828
149	Biliary tract disease	135587	0.80	1	0	0.894	0.899
150	Liver disease, alcohol-related	5133	0.69	0	2	0.678	0.758
151	Other liver diseases	14584	0.80	1	0	0.771	0.807
153	Gastrointestinal haemorrhage	37229	0.71	0	1	0.738	0.764
155	Other gastrointestinal disorders	45487	0.91	0	0	0.907	0.908
157	Acute and unspecified renal failure	8804	0.73	0	0	0.723	0.760
158	Chronic renal failure	14570	0.75	0	2	0.846	0.872
159	Urinary tract infections	62382	0.77	0	0	0.817	0.836
226	Fracture of neck of femur (hip)	74557	0.73	0	2	0.719	0.732
233	Intracranial injury	56535	0.95	0	1	0.939	0.941
237	Complication of device, implant or graft	76079	0.69	0	0	0.821	0.833
238	Complications surgical procedures or medical care	67106	0.76	0	0	0.827	0.833
249	Shock	3150	0.80	1	0	0.716	0.733
	Total all CCS diagnostic groups	2494613	0,86	49	64	0.852	0.867

* Per CCS diagnostic group: number of admissions; statistical distance between model 1 and model 2; number of hospitals with significance differences of SMRs comparing model 1 to model 2, c-statistics for both models. The table includes results of 70 Dutch hospitals over the period 2005 - 2009

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ISSN: 1472-6963

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