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Table 1 Outcomes grouped by peak TNF-α post-LPS challenge

From: The relationship between immune status as measured by stimulated ex-vivo tumour necrosis factor alpha levels and the acquisition of nosocomial infections in critically ill mechanically ventilated patients

 

Tertile 1

(Low TNF-α levels)

(n = 67)

Tertile 2

(Medium TNF-α levels)

(n=67)

Tertile 3

(High TNF-α levels)

(n=67)

Total cohort

(n=201)

P-value

Suspected nosocomial infection: N (%)

31 (46%)

39 (58%)

39 (58%)

109 (54%)

 

Total positive adjudicated infections: n

16

22

29

67

0.494

Adjudicated positive infections per subject: Mean ± SD

0.2 ± 0.5

0.3 ± 0.7

0.4 ± 0.8

0.3 ± 0.7

0.066

Source of positive infections

 Surgical

2 (12.5%)

1 (4.5%)

1 (3.4%)

4 (2.0%)

 

 Skin-soft tissue

0 (0.0%)

1 (4.5%)

2 (6.9%)

3 (1.5%)

 

 Catheter BSI

0 (0.0%)

1 (4.5%)

4 (13.8%)

5 (2.5%)

 

 Primary BSI

0 (0.0%)

3 (13.6%)

3 (10.3%)

6 (3.0%)

 

 UTI

0 (0.0%)

4 (18.2%)

6 (20.7%)

10 (14.9%)

 

 Intra-abdominal

0 (0.0%)

2 (9.1%)

0 (0.0%)

2 (1.0%)

 

 Lower RTI

6 (37.5%)

2 (9.1%)

2 (6.9%)

10 (5.0%)

 

 ICU Pneumonia

6 (37.5%)

7 (31.8%)

11 (37.9%)

24 (11.9%)

 

 Other

2 (12.5%)

1 (4.5%)

0 (0.0%)

3 (1.5%)

 

ICU Mortality: n (%)

21 (31.3%)

21 (31.3%)

23 (34.3%)

65 (32.3%)

0.913

Hospital mortality: n (%)

23 (34.3%)

21 (31.3%)

26 (38.8%)

70 (34.8%)

0.659

90-day mortality: n (%)

24 (35.8%)

24 (35.8%)

28 (41.8%)

76 (37.8%)

0.713

ICU length of stay

    

0.552

 Median [IQR]

9.1 [5.5 to 13.8]

9.0 [6.9 to 13.3]

9.0 [5.3 to 15.9]

9.0 [5.9 to 15.2]

 

Hospital length of stay

    

0.237

 Median [IQR]

17.6 [7.7 to 30.3]

14.6 [8.5 to 33.9]

19.1 [9.0 to 34.0]

16.8 [8.5 to 32.3]