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Table 1 Baseline characteristic of the CRGNB colonized patients at active surveillance

From: Active surveillance of carbapenem-resistant gram-negative bacteria to guide antibiotic therapy: a single-center prospective observational study

 

Infection after colonization, N = 152

Colonization, N = 299

P

OR (95%CI)

Age, year, mean (SD)

60.6 (12.4)

59.0 (11.9)

0.32

/

Male sex, no. (%)

112 (73.6%)

206 (68.9%)

0.29

0.85 (0.51–1.22)

Primary disease (%)

    

Cerebrovascular accidents, no. (%)

38 (25.0%)

79 (26.4%)

0.74

0.93 (0.59–1.45)

Cardiac insufficiency, no. (%)

16 (10.5%)

26 (8.7%)

0.52

1.24 (0.64–2.38)

Trauma, no. (%)

61 (40.1%)

115 (38.5%)

0.75

1.07 (0.72–1.59)

Infection, no. (%)

49 (32.2%)

82 (27.4%)

0.28

1.25 (0.82–1.92)

Malignant tumor, no. (%)

11 (7.2%)

26 (8.7%)

0.59

0.82 (0.39–1.71)

Diabetes mellitus, no. (%)

14 (9.2%)

41 (13.7%)

0.17

0.64 (0.34–1.21)

APACHE II scores, median (IQR)

16.8 (7.5–25.6)

16.4 (8.0–29)

0.29

/

Intubation or tracheotomy, no. (%)

76 (50.0%)

162 (54.2%)

0.40

0.86 (0.57–1.25)

Prior cephalosporins history, no. (%)

116 (76.35)

198 (66.2%)

0.028

1.64 (1.05–2.56)

Prior carbapenems history, no. (%)

71 (46.7%)

44 (14.7%)

< 0.001

5.08 (3.23–7.97)

Invasive operation, no. (%)

133 (87.5%)

228 (76.3%)

0.005

2.18 (1.26–3.78)

Operation History, no. (%)

20 (13.2%)

29 (9.7%)

0.26

1.41 (0.76–2.58)

Glucocorticoid history, no. (%)

44 (28.9%)

47 (15.7%)

0.001

2.18 (1.36–3.49)

Immunocompromise, no. (%)

72 (47.4%)

69 (23.1%)

< 0.001

3.00 (1.98–4.55)

Other hospital history, no. (%)

90 (59.2%)

147 (49.2%)

0.043

1.52 (1.01–2.28)

Another department history, no. (%)

52 (34.2%)

67 (22.4%)

0.007

1.80 (1.17–2.77)

CRGNB type, no. (%)

    

 CRKP

60 (39.5%)

80 (26.7%)

0.006

1.78 (1.18–2.70)

 CRPA

56 (36.8%)

90 (30.1%)

0.15

1.35 (0.89–2.04)

 CRAB

32 (21.1%)

102 (34.1%)

0.004

0.51 (0.32–0.84)

 Other CRE

4 (2.6%)

27 (9.0%)

0.025

0.34 (0.12–0.90)

MIC of carbapenems (mg/L)

    

 Imipenem median (IQR)

16 (8–64)

16 (8–64)

1.0

/

 Ertapenem median (IQR)

8 (4–32)

8 (4–32)

1.0

/

Active surveillance sites, no. (%)

    

 Throat swab and/or sputum culture

115 (75.6%)

213 (71.2%)

0.31

1.25 (0.80–1.96)

 Rectal swab and/or fecal culture

30 (19.7%)

72 (24.1%)

0.29

0.77 (0.48–1.25)

 Other cultures

7 (4.6%)

14 (4.7%)

0.97

0.98 (0.38–2.48)

Septic shock, no. (%)

84 (55.2%)

81 (27.1%)

< 0.001

3.32 (2.21–5.00)

Acute kidney injury, no. (%)

74 (48.7%)

69 (23.1%)

< 0.001

3.16 (2.08–4.79)

Death, no. (%)

39 (25.6%)

42 (14.0%)

0.002

2.11 (1.30–3.44)

Length of ICU stay, day, median (IQR)

17.8 (3.0–34.5)

8.9 (2.5–30.0)

< 0.001

/

Length of hospital stay, day, median (IQR)

27.6 (6.5–65.5)

19.3 (5.0–45.0)

< 0.001

/

  1. CRGNB: carbapenem-resistant Gram-negative bacteria; CRKP: carbapenem-resistant Klebsiella pneumoniae; CRAB: carbapenem-resistant Acinetobacter baumannii; CRPA: carbapenem-resistant Pseudomonas aeruginosa; CRE: carbapenem-resistant enterobacteria; SD: standard deviation; APACHE II: acute physiology and chronic health evaluation; IQR: interquartile range; ICU: intensive care unit; OR: odds ratio; CI: confidence interval