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Table 3 Characteristics of patients with an intensive care unit (ICU) length of stay below (<5days) vs. above (> 5 days) a clinical threshold for concern about a prolonged ICU stay.

From: A predictive model for the early identification of patients at risk for a prolonged intensive care unit length of stay

 

Regular ICU Stays

Prolonged ICU Stays

P-value

# Admissions

270,487

73,068

 

Age (years)

61.6 ± 17.7

61.9 ± 17.4

0.002

Acute Physiology Score - Day 1

36.2 ± 23.7

53.5 ± 25.7

<0.001

Day 1 ICU LOS Prediction

3.26 ± 2.04

5.80 ± 2.29

<0.001

Prior LOS (square root of days)

0.89 ± 1.27

1.26 ± 1.64

<0.001

Gender = Male

54.1%

55.1%

<0.001

Operative

31.7%

23.1%

<0.001

Emergency Surgery

5.2%

9.2%

<0.001

ICU Readmission

5.0%

10.6%

<0.001

Mechanical Ventilation on Day 1

27.9%

66.2%

<0.001

Received active treatment on Day 1

53.5%

82.5%

<0.001

≥ 1 Chronic health item

12.4%

16.4%

<0.001

Race

  

<0.001

   White

65.9%

65.5%

 

   Black

13.1%

15.2%

 

   Latino

3.8%

3.8%

 

   Other

17.3%

15.5%

 

Location Prior to ICU Admission

  

<0.001

   Operating Room

9.9%

10.9%

 

   Recovery Room

21.8%

12.3%

 

   Emergency Room

38.0%

33.2%

 

   Floor

15.0%

22.9%

 

   Other Hospital

5.2%

8.3%

 

   Direct Admission

5.7%

4.2%

 

SDU

4.4%

8.4%

 

Visit

  

<0.001

   1

95.1%

89.5%

 

   2

4.4%

8.8%

 

   ≥ 3

0.6%

1.7%

 

Top Five Diagnostic Groups*

   

Congestive heart failure

3.7%

Bacterial pneumonia

5.2%

Gastrointestinal bleeding, Upper

3.1%

Congestive Heart Failure

3.6%

Rhythm disturbance

3.1%

Sepsis, pulmonary

3.1%

Drug Overdose

2.6%

Intracerebral hemorrhage

3.0%

Carotid endarterectomy

2.6%

Cardiac Arrest

2.9%

  1. * Does not include 'miscellaneous" categories within a body system.