Table 4 Patients’ characteristics according to in-hospital length of stay.

From: Burden of critically ill patients with influenza in a French catchment population

 

Total

n = 201

 ≤ 24 days

n = 102

 > 24 days

n = 99

Univariate analysis

p

Multivariate anlaysis

OR (95% CI)

p

Age (years)

63 ± 16

64 ± 17

62 ± 15

0.18

0.99 (0.97–1.01)

0.31

Male sex

107 (53)

55 (54)

52 (53)

0.82

0.91 (0.50–1.65)

0.75

BMI (kg/m2)

27 ± 7.2

27 ± 7.6

27 ± 6.8

0.83

  

No comorbidity

19 (9.4)

7 (6.9)

12 (12

0.20

  

Immune depression

47 (23)

23 (23)

24 (24)

0.78

  

Chronic pulmonary disease

71 (35

43 (42)

28 (28)

0.04

0.79 (0.41–1.53)

0.49

Chronic heart disease

42 (21)

22 (22)

20 (20)

0.81

  

Symptom duration before ICU (days)

5.1 ± 5.0

4.6 ± 4.1

5.7 ± 5.7

0.36

  

Viral subtype

   

0.30

  

Influenza A(H1N1)pdm

102 (51)

52 (51)

50 (51)

0.82 (0.43–1.54)

0.53

Other Type A

69 (34)

31 (30)

38 (38)

  

Type B

30 (15)

19 (19)

11 (11)

  

Bacterial coinfection at admission

48 (24)

19 (19)

29 (29)

0.09

1.40 (0.68–2.86)

0.36

SAPS II

44 ± 17

45 ± 19

43 ± 15

0.70

  

SOFA score at admission

8.0 ± 4.2

6.9 ± 4.0

9.1 ± 4.1

0.001

1.12 (1.04–1.29)

0.005

  1. Data are number (%) or mean ± standard deviation, as appropriate.
  2. BMI: Body Mass Index; ICU: Intensive Care Unit; SAPS II: Simplified Acute Physiology Score II; SOFA: Sepsis-Related Organ Failure Assessment.