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Did hospital mortality in England change from 2005 to 2010? A retrospective cohort analysis

Overview of attention for article published in BMC Health Services Research, June 2013
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (81st percentile)
  • Good Attention Score compared to outputs of the same age and source (66th percentile)

Mentioned by

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11 tweeters
facebook
1 Facebook page

Citations

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9 Dimensions

Readers on

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26 Mendeley
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1 CiteULike
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Title
Did hospital mortality in England change from 2005 to 2010? A retrospective cohort analysis
Published in
BMC Health Services Research, June 2013
DOI 10.1186/1472-6963-13-216
Pubmed ID
Authors

Richard M Jacques, James Fotheringham, Michael J Campbell, Jon Nicholl

Abstract

BACKGROUND: There is some evidence that hospital performance in England measured by the Dr Foster Hospital Standardised Mortality Ratio (HSMR) has improved substantially over the last 10 years. This study explores mortality in-hospital and up to 30 days post-discharge over a five year period to determine whether there have been improvements in case-mix adjusted mortality, to examine if any changes are due to changes in case-mix adjustment variables such as age, sex, method of admission and comorbidity, and to compare changes between hospital trusts. METHODS: Using Hospital Episode Statistics linked to mortality data from the Office for National Statistics the Summary Hospital-Level Mortality Index (SHMI) was calculated for all patients who were discharged or died in general acute hospital trusts in England for the period 01/04/2005 to 30/09/2010. RESULTS: During this five year period the number of admissions rose by 8% but deaths fell by 5%. The SHMI fell by 24% from 112 to 85 over the period, partly due to fewer deaths but partly due to increasing numbers predicted by the SHMI model. Excluding comorbidities from the model the SHMI fell by 18% from 108 to 89 over this period. The reduction was similar in emergency and elective admissions and in all other sub-groups examined. The average quarterly change in SHMI varied considerably between trusts (range: -4.4 to -0.2). CONCLUSIONS: As measured by the SHMI there has been a 24% improvement in mortality in acute general trusts in England over a period of five and a half years. Part of this improvement is an artificial effect caused by changes in the depth of coding of comorbidities and other effects due to change in case-mix or non-constant risk.

Twitter Demographics

The data shown below were collected from the profiles of 11 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 26 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 4%
Unknown 25 96%

Demographic breakdown

Readers by professional status Count As %
Researcher 6 23%
Student > Ph. D. Student 6 23%
Student > Master 4 15%
Student > Doctoral Student 2 8%
Other 2 8%
Other 6 23%
Readers by discipline Count As %
Medicine and Dentistry 13 50%
Unspecified 4 15%
Mathematics 2 8%
Agricultural and Biological Sciences 2 8%
Computer Science 1 4%
Other 4 15%

Attention Score in Context

This research output has an Altmetric Attention Score of 7. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 June 2013.
All research outputs
#2,369,535
of 13,490,476 outputs
Outputs from BMC Health Services Research
#1,092
of 4,518 outputs
Outputs of similar age
#27,508
of 151,812 outputs
Outputs of similar age from BMC Health Services Research
#3
of 9 outputs
Altmetric has tracked 13,490,476 research outputs across all sources so far. Compared to these this one has done well and is in the 82nd percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,518 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.5. This one has done well, scoring higher than 75% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 151,812 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 81% of its contemporaries.
We're also able to compare this research output to 9 others from the same source and published within six weeks on either side of this one. This one has scored higher than 6 of them.