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Table 1 Descriptive results of all risk factors and outcomes for all 1,876 admissions

From: Risk factors for the development of nosocomial pneumonia and mortality on intensive care units: application of competing risks models

Variables

  

Continuous:

Mean

SD

Age

60.0

18.4

SAPS II

35.2

18.7

Binary:

Number

Percentaqe

Female gender

764

40.72

Intubation on admission

848

45.20

Pneumonia on admission

220

11.73

LRT on admission

24

1.28

Urinary tract infection on admission

42

2.24

Other infections on admission

139

7.41

Hospitalization before admission

1,334

71.11

Surgical patients

433

23.08

Elective surgery before admission

883

47.07

Emergency surgery before admission

456

24.31

Cardial/pulmonary underlying disease

653

34.81

Neurological underlying disease

370

19.72

Metabolic/renal underlying disease

180

9.59

Other underlying disease

180

9.59

Time-dependent events (binary)

Number of events

Time (days) to event among those with event (Q25, median, Q75)

Discharge from ICU (alive)

1,632

(5,8,17)

Death in the ICU

214

(7,13,27)

Nosocomial pneumonia

158

(5,8,14)

Nosocomial blood stream infection

35

(7,13,26)

Nosocomial LRT

33

(5,6,10)

Ventilation

1,041

(1,1,1)

Chest drainage

366

(1,1,1)

Colostomy

44

(1,1,1)

Enterostomy

59

(1,1,1)

Jejunostomy

23

(1,1,10)

Nasogastric tube

1,263

(1,1,1)

Urinary catheter

1,608

(1,1,1)

  1. ICU, intensive care unit; LRT, lower respiratory tract infection (other than pneumonia); Q, quartile; SAPS, simplified acute physiology score.