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Table 4 Mortality figures per Admission view class: crude mortality per admission and predicted mortality per admission.

From: Predicting hospital mortality among frequently readmitted patients: HSMR biased by readmission

Admission view class

Observed number of

Crude mortality

DHM-2008 predicted

 

admissions

deaths

per admission

number of deaths

mortality per admission

A(n = 1)

240662

8836

3.7%

9783

4.1%

A(n = 2)

75778

2868

3.8%

2981

3.9%

A(n = 3)

33902

1377

4.1%

1389

4.1%

A(n = 4)

18546

727

3.9%

740

4.0%

A(n = 5,6)

19124

695

3.6%

714

3.7%

A(n = 7-9)

12634

404

3.2%

421

3.3%

A(n = 10-20)

12483

265

2.1%

293

2.2%

A(n > 20)

5437

55

1.0%

57

1.1%

Total

418566

15227

3.6%

16379

3.9%

  1. * The numbers represent totals of the six hospitals. Predicted mortality per admission is in line with observed mortality for all admission view classes. The statistical significance of this is shown in table 5 by means of corresponding standardised mortality ratios and 95% confidence intervals.