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Table 1 Characteristics of the patients

From: Impact of a strategy based on unique blood culture sampling on contamination rate and detection of bloodstream infections in critically ill patients

Characteristics

Overall (n = 4491)

MS period (n = 2639)

UBC period

(n = 1852)

P value

Age—yr

62 ± 17

62 ± 17

63 ± 16

0.02

Male sex, n (%)

2901 (65)

1678 (64)

1223 (66)

0.1

Simplified Acute Physiology Score II

45 ± 20

44 ± 19

48 ± 21

 < 0.001

Sequential Organ Failure Assessment score

6.7 ± 4.1

6.6 ± 4

7 ± 4.3

0.001

McCabe score, n (%)

   

 < .001

 1

2029 (45)

1348 (51)

681 (37)

 

 2

1727 (38)

841 (32)

886 (48)

 

 3

735 (16)

450 (17)

285 (15)

 

Reason for admission, n (%)

   

 <0 .001

 Medical

4276 (95)

2469 (94)

1807 (98)

 

 Scheduled surgery

25 (0.6)

20 (0.8)

5 (0.3)

 

 Emergency surgery

190 (4.2)

150 (5.7)

40 (2.2)

 

 Mechanical ventilation, n (%)

2880 (64)

1716 (65)

1164 (63)

0.14

 Duration—days

6 ± 10

5 ± 10

6 ± 11

0.007

 Central venous catheter, n (%)

2426 (54)

1364 (52)

1062 (57)

 <0 .001

 Duration—days

8 ± 18

7 ± 17

9 ± 19

 < 0.001

 Indwelling urinary catheter, n (%)

3799 (85)

2222 (84)

1577 (85)

0.4

 Outcomes

   

0.3

 In-ICU death

1056 (24)

616 (23)

440 (24)

0.8