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Table 1 Centers and patients characteristics

From: Determinants of the calibration of SAPS II and SAPS 3 mortality scores in intensive care: a European multicenter study

Center characteristics

Centers (n = 120)

Patients (n = 5266)

Number of patients/ICU, median [range]

32 [20–89]

 

Number of hospital bedsa, n (%)

  < 500

39 (33.6%)

1403 (27.5%)

 500–1000

54 (46.6%)

2630 (51.5%)

  > 1000

23 (19.8%)

1072 (21.0%)

Health expenditure (% of GDPb), n (%)

  

  < 8%

19 (15.8%)

961 (18.2%)

 8% to 10%

51 (42.5%)

2107 (40.0%)

  > 10%

50 (41.7%)

2198 (41.7%)

IMCU (intermediate care unit), n (%)

 Yes

103 (85.8%)

4563 (86.7%)

Daytime nurse/patient ratio, n (%)

  < 0.5

25 (20.8%)

1150 (21.8%)

 0.5–1

58 (48.3%)

2536 (48.2%)

  > 1

37 (30.8%)

1580 (30.0%)

ICU adjusted beds, n (%)

  < 8

19 (15.8%)

571 (10.8%)

 8–12

49 (40.8%)

1901 (36.1%)

  > 12

52 (43.3%)

2794 (53.1%)

Possibility of extra beds inside ICU, n (%)

 Yes

24 (20.0%)

1114 (21.2%)

Patient characteristics

 Male sex, n (%)

 

3143 (59.7%)

 Age, years, mean ± SD

 

62.4 ± 16.9

 SAPS IIc, mean ± SD

  Score

 

39.3 ± 21.3

  Predicted mortality

 

30.1% ± 30.2

 SAPS 3d, mean ± SD

 Score

 

35.0 ± 17.2

  Predicted mortality

 

25.4% ± 24.5

 Hospital mortality, n (%)

  Death

 

1194 (22.7%)

 ICU admission, n (%)

  Unplanned

 

3613 (68.7%)

 Surgery, n (%)

  Emergency surgery

 

983 (18.7%)

  No surgery

 

2663 (50.6%)

  Scheduled surgery

 

1612 (30.7%)

 Reason for admissione, n (%)

  Basic observation

 

1111 (21.1%)

  Cardiovascular

 

1252 (23.8%)

  Digestive

 

526 (10.0%)

  Hematological

 

77 (1.5%)

  Hepatic

 

62 (1.2%)

  Metabolic

 

195 (3.7%)

  Neurological

 

800 (15.2%)

  Renal

 

200 (3.8%)

  Respiratory

 

980 (18.6%)

  Severe trauma

 

255 (4.8%)

  1. Abbreviations: GDP Gross domestic product, ICU Intensive care unit, IMCU Intermediate care unit, SAPS Simplified Acute Physiology Score
  2. aThe total number of hospitals giving information on the number of hospital beds was 116
  3. bHealth expenditure in the country of the center expressed in percentage of GDP. (Source: World Bank [http://data.worldbank.org/indicator/SH.XPD.TOTL.ZS].)
  4. cThe medians (interquartile ranges) were 35 [23–52] for the SAPS II score and 16.7% [5.2% to 50.7%] for the mortality predicted by the SAPS II score
  5. dThe medians (interquartile ranges) were 33 [22–46] for the SAPS 3 score and 15.9% [5.1% to 39.8%] for the mortality predicted by the SAPS 3 score
  6. eReasons for admission were not exclusive (except “basic observation,” which is exclusive of all other reasons)