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Table 4 Mortality risk factors after propensity matching cohort

From: The effect of follow-up blood cultures on mortality and antibiotic use in gram-negative bloodstream infections

 

Mortality

n = 159

No Mortality

n = 313

P value

Adjusted OR

Age (years), median (IQR)

67 (58–79)

63 (48.5)

0.002

Not included

Male sex, n (%)

84 (52.8)

177 (56.5)

0.442

 

Comorbidities, n (%)

Diabetes mellitus

44 (27.7)

81 (25.9)

0.676

 

Hypertension

74 (46.5)

116 (37.1)

0.047

Not included

Chronic heart disease

47 (26.9)

63 (20.1)

0.022

Not included

Cerebrovascular disease

21 (13.2)

39 (12.5)

0.818

 

Chronic obstructive pulmonary disease

17(10.7)

33 (10.5)

0.960

 

Malignancy

91 (57.2)

153 (48.9)

0.086

Not included

Charlson comorbidity index score, median (IQR)

6 (4–8)

5 (2–6)

< 0.001

1.18 (1.08–1.28)

Clinical severity at index blood culture time, median (IQR)

SOFA score

7 (4–9)

3 (1–5)

< 0.001

1.33 (1.23–1.44

SIRS

2 (1–3)

2 (1–3)

0.516

 

ICU support, n (%)

121 (76.1)

106 (33.9)

< 0.001

Not included *

Central venous catheter, n (%)

115(72.3)

154 (49.2)

< 0.001

0.79 (0.45–1.38)

Cardiac device, n (%)

10 (6.3)

10 (3.2)

0.115

 

Prosthetic device, n (%)

6 (3.8)

14 (4.5)

0.722

 

Site of BSI acquisition, n (%)

    

Community-acquired

32 (20.1)

122 (39)

< 0.001

1.93 (1.08–3.46)

Nosocomial acquired

127 (79.9)

191 (61)

Source of BSI, n (%)

Primary BSI

66 (41.5)

134 (42.8)

0.786

 

Secondary BSI

93 (58.5)

179 (57.2)

CR-GN, n (%)

80 (55.9)

59 (20.4)

< 0.001

2.92 (1.72–4.96)

MDR, n (%)

41(25.8)

113 (36.1)

0.024

0.98 (0.58–1.65)

XDR, n (%)

46 (28.9)

30 (9.6)

< 0.001

Not included

PDR, n (%)

5 (3.1)

4 (1.3)

0.161

 

FUBC, n (%)

78 (49.1)

158 (50.5)

0.770

 

FUBC positivity, n (%)

24 (30.8)

33 (20.9)

0.095

1.56 (0.69–3.53)

Persistent BSIs, n (%)

7 (9)

6 (3.8)

0.101

 

Appropriate empirical antibiotic therapy, n (%)

76 (47.8)

170 (54.3)

0.181

 
  1. Nagelkerke R: 0.385, Hosmer-Lemeshow test: 0.608
  2. The variable covered by the other variables in the model was not included in the regression model. Age and comorbid diseases were not included in the model because they were parameters of CCIs. As all XDR-GNs were CR, XDR-GNs were not included in the model
  3. * Variable with high correlation with other variables was not included in the regression model.ICU support was not included in the model due to its high correlation with the SOFA score (spearman, rho >0.75)
  4. Abbreviations: ICU: intensive care unit, IQR: interquartile range, SOFA score: the sequential organ failure assessment score, SIRS: systemic inflammatory response syndrome, BSI: bloodstream infection, CR-GN: carbapenem-resistant gram-negative, MDR: multi-drug resistant, XDR: extensively drug-resistant, PDR: pan-drug resistant, FUBC: follow-up blood culture