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Table 3 Multivariable logistic regression of factors associated with polymicrobial Staphylococcus aureus bloodstream infections

From: Clinical characteristics and risk factors of polymicrobial Staphylococcus aureus bloodstream infections

VariableUnadjusted
OR(95%CI)
p-valueAdjusted
OR(95%CI)
p-value
Co-morbidities
 Trauma2.42 (1.29,4.56)0.01  
 Burn injury3.40 (1.68,6.88)0.007.04 (1.71,28.94)0.01
 Cerebrovascular accident2.44 (1.13,5.26)0.02  
APACHE II score1.08 (1.04,1.12)0.00  
SOFA score1.11 (1.04,1.18)0.00  
Pitt Bacteremia Score1.29 (1.15,1.44)0.00  
ICU stay5.16 (2.74,9.72)0.00  
Previous treatment
 Parenteral nutrition3.02 (1.67,5.47)0.00  
 Previous surgery3.21 (1.77,5.83)0.00  
 Prior Blood transfusion4.44 (2.32,8.47)0.002.72 (1.14,6.50)0.03
 Central venous catheter2.28 (1.24,4.16)0.01  
 Mechanical ventilation5.76 (3.09,10.75)0.003.11 (1.16,8.30)0.02
 Indwelling urinary catheter4.83 (2.40,9.73)0.00  
Nosocomial infection9.84 (2.34,41.34)0.00  
Prior hospital stay1.02 (1.01,1.03)0.011.02 (1.00,1.03)0.02
Source of BSIs
 Pneumonia2.62 (1.44,4.78)0.004.22 (1.69,10.51)0.00
 Central venous catheter0.31 (0.11,0.88)0.03  
MRSA2.36 (1.14,4.88)0.02  
  1. Abbreviations: CCI Charlson Comorbidity Index, SOFA Sequential organ failure assessment, APACHE Acute physiology and chronic health evaluation, ICU Intensive care unit, BSIs Bloodstream infections, MRSA Methicillin-resistant Staphylococcus aureus, OR Odds ratio, CI Confidence interval