Table 4

Summary of existing international multicentre literature on case mix and outcomes for admissions to critical care units

Project IMPACT (US) [26]

APACHE III (US) [14]

Brazil APACHE III Study [27]

ENASSG (US/Europe) [22]

EURICUS-I (Europe) [28]


Admissions

40,435

17,440

1734

14,745

10,027

Units

55

42

10

137

89

Mean age

59.9

59

52

57.2

59.3

Male (%)

54.3

44.8

62

59.6

-

Surgical status (%)

Nonsurgical

64.1

57.7

64.2

48.4

55.9

Elective

22.5

33.3

22.7

31.2

24.3

Emergency

13.4

9.0

13.1

19.6

19.8

Risk model

SAPS II

APACHE III

APACHE III

All

SAPS II

Mean probability

-

0.165*

0.204

-

0.223

Mortality (%)

Unit

-

-

29

-

13.9

Hospital

18.2

16.5

34

21.8

20.0


NICE (Netherlands) [29]

ASDI (Austria) [30]

PAEEC (Spain) [31]

PSSSG (Portugal) [32]

JSICM (Japan) [33]


Admissions

55,016

25,998

12,174

984

5,107

Units

18

31

86

19

33

Mean age

-

62.1

57.7

55.4

58.3

Male (%)

65.1

58.3

68

67.7

64.5

Surgical status (%)

Nonsurgical

23.2

41.5

75.9

68.2

40.8

Elective

65.4

34.1

13.7

19.6

49.4

Emergency

11.4

24.4

10.4

12.2

9.8

Risk model

APACHE II

SAPS II

APACHE III

APACHE II

APACHE III

Mean probability

0.25

0.193

0.198

0.335

0.181

Mortality (%)

Unit

13.3

-

-

24.5

-

Hospital

20.9

17.6

21.2

32.0

18.2


APACHE, Acute Physiology and Chronic Health Evaluation; ASDI, Austrian Center for Documentation and Quality Assurance in Intensive Care Medicine; ENASSG, European/North American Severity Study Group; EURICUS, European Study of Intensive Care Units; JSICM, Japanese Society of Intensive Care Medicine; NICE, National Intensive Care Evaluation; PAEEC, Project for the Epidemiological Analysis of Critical Care Patients; PSSSG, Portuguese Severity Scores Study Group; SAPS, Simplified Acute Physiology Score; -, not available from published report(s). * Observed and expected mortality are identical as this database represents the development population for the APACHE III model. APACHE II mortality probability and mortality figures reported for 24,329 admissions eligible for APACHE II.

Harrison et al. Critical Care 2004 8:R99   doi:10.1186/cc2834

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