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Table 5 Characteristics of the patients according to the carrier status of methicillin-resistant Staphylococcus aureus (MRSA)

From: First multicenter study on multidrug resistant bacteria carriage in Chinese ICUs

Characteristics

MRSA carriage

 

On admission

ICU-acquired

Not carrier

P value*

 

n (%)

n (%)

n (%)

 

Total

23 (100.0)

35 (100.0)

628 (100.0)

 

Male (yes)

12 (52.2)

21 (60.0)

372 (59.3)

0.93

Severe/critical status on admission

19 (82.6)

30 (85.7)

476 (75.8)

0.22

Previous hospitalization

11 (47.8)

11 (31.4)

168 (26.8)

0.54

Origin of patients before ICUa

- community

2 (8.7)

1 (2.9)

25 (4.0)

reference

- emergency room

2 (8.7)

13 (37.1)

100 (16.0)

0.47

- other wards

17 (73.9)

18 (51.4)

459 (73.1)

1.00

- other hospitals

2 (8.7)

3 (8.6)

25 (4.0)

0.61

- others/no data

0

0

16 (2.6)

1.00

Invasive devices before ICU

16 (69.6)

14 (40.0)

283 (45.1)

0.56

Invasive devices in ICU

22 (95.7)

34 (97.1)

599 (95.4)

1.00

- mechanical ventilation

17 (73.9)

21 (60.0)

343 (54.6)

0.53

- indwelling urinary catheter

21 (91.3)

33 (94.3)

575 (91.6)

0.76

- intravascular catheter

17 (73.9)

32 (91.4)

465 (74.0)

0.03

Antibiotic in the last 3 months

16 (69.6)

23 (65.7)

240 (38.2)

0.001

Antibiotic on ICU admission

18 (78.3)

31 (88.6)

537 (85.7)

0.81

- > 1 drug

5 (21.7)

16 (45.7)

211 (33.6)

0.21

Antibiotic in ICU

- none

2 (9.1)

0

32 (5.1)

reference

- 1 drug

10 (43.5)

10 (28.6)

294 (46.8)

0.61

- 2 drugs

4 (17.4)

7 (20.0)

195 (31.1)

0.60

- > 2 drugs (3–7)

7 (30.0)

18 (51.4)

107 (17.0)

0.03

- penicillins

0

0

10 (1.6)

1.00

- penicillins + inhibitors

8 (34.8)

15 (42.9)

172 (27.4)

0.05

- cephalosporins 1st & 2nd G

3 (13.4)

5 (14.3)

146 (23.3)

0.30

- cephalosporins 3rd G /aztreonam

5 (21.7)

15 (42.9)

205 (32.6)

0.21

- carbapenems

8 (34.8)

16 (45.7)

121 (19.3)

<0.001

- aminoglycosides

0

1 (2.9)

11 (1.8)

0.48

- fluoroquinolones

6 (26.1)

8 (22.9)

102 (16.2)

0.30

- glycopeptides

4 (17.4)

15 (42.9)

98 (15.6)

<0.001

- others

6 (26.1)

10 (28.6)

182 (29.0)

0.96

Type of discharge at 28 ICU daysb

- discharged from hospital

3 (13.6)

8 (22.9)

71 (11.3)

reference

- remain in ICU

2 (9.1)

6 (17.1)

28 (4.5)

0.27

- other ward

11 (50.0)

18 (51.4)

488 (77.7)

0.008

- death

6 (27.3)

3 (8.6)

36 (5.7)

1.00

Age (year)

71 (40–93)

70 (20–99)

65 (9–95)

0.11

Length of stay (days)

- in hospital before ICU admission

14 (0 – >60)

3 (0 – >60)

6 (0 – >60)

0.12

- in ICU

7 (2 – >28)

12 (3–28)

4 (1 – >28)

<0.001

- before MDR acquisition

7 (3–27)

 

Total antibiotic-days in ICU

6 (0–26)

6 (2–22)

3 (0–28)

<0.001

  1. *Comparing ICU-acquired MDRO patients to non carriers; aData are missing for 3 patients; bData are missing for 6 patients