Table 3 Risk factors for the acquisition of carbapenem-resistant Enterobacterales

Age

 ≤65 years

1

 >65 years

1.113

0.544–2.278

0.769

Sex

 Male

1

 Female

1.035

0.524–2.044

0.922

Charlson comorbidity index

 ≤3

1

1

 >3

1.756

0.886–3.482

0.107

1.478

0.729-3.000

0.279

SOFA score

 ≤6

1

 >6

0.623

0.297–1.308

0.211

Carbapenem

 Not exposed

1

1

 Exposed

2.753

1.332–5.691

0.006

2.555

1.208–5.403

0.014*

Beta-lactam and beta-lactamase inhibitor

 Not exposed

1

 Exposed

1.031

0.507-2.100

0.932

Third- or fourth-generationcephalosporin

 Not exposed

1

 Exposed

0.866

0.419

1.789

Vancomycin

 Not exposed

1

 Exposed

1.209

0.605–2.413

0.591

Fluoroquinolone

 Not exposed

1

 Exposed

0.830

0.405–1.702

0.612

Mechanical ventilation

 Not applied

1

 Applied

0.691

0.310–1.542

0.367

Tracheostomy

 Not performed

1

 Performed

0.912

0.437–1.902

0.805

Central venous catheter

 Not applied

1

 Applied

1.196

0.518–2.761

0.675

Tube feeding

 Not applied

1

 Applied

0.875

0.293–2.620

0.812

Urinary catheter

 Not applied

1

 Applied

0.845

0.297–2.407

0.753

CRRT

 Not applied

1

1

 Applied

1.610

0.798–3.251

0.184

1.144

0.548–2.389

0.721

Number of CRE colonisers present during ICU stay

 ≤4

1

1

 >4

2.715

1.256–5.869

0.011*

2.639

1.226–5.684

0.013*

Universal contact precautions and CHG bathing

 Before intervention

1

1

 After intervention

0.696

0.320–1.513

0.360

0.657

0.301–1.433

0.291