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Table 4 Intrinsic and extrinsic risk factors for Hospital Acquired Infection: univariate and multi-variate analysis (logistic regression)

From: Prevalence of hospital-acquired infections in the university medical center of Rabat, Morocco

  Infected patients (%) Univariate analysis Multivariate analysis
OR* 95% CI pvalue OR* 95% CI pvalue
Age (years)        
 ≤ 15 8.5 1.07 0.6-1.9 0.815 1.03 0.47-2.28 0.939
 16 - 40 9.6 1.22 0.7-2.1 0.450 1.24 0.67-2.57 0.65
 41 - 60 8.0 1    1   
 > 60 15.1 2.05 1.2-3.6 0.012 2.71 1.21-4.95 0.006
Gender        
 Female 9.3 1      
 Male 10.1 1.09 0.7-1.6 0.66    
Length of hospital stay (days)        
 ≤ 5 3.5 1    1   
 6 - 10 9.5 2.87 1.4-5.7 0.003 3.79 1.68- 8.93 0.001
 11 - 20 11 3.40 1.7-6.8 0.01 4.40 1.83-10.61 0.001
 > 20 16.1 5.26 2.7-10.1 <0.001 9.6 3.63-18.51 <0.001
Provenance        
 Home 8.5 1    1   
 Hospital 1.1 1.77 1.2-2.7 0.07 1.45 0.84-2.50 0.18
MacCabe index        
 Non fatal disease 6 .3 1    1   
 Ultimately fatal disease 14.5 2.5 1.7-3.8 <0.001 2.01 1.21-3.36 0.007
 Rapidly fatal disease 20.3 3.8 1.9-7.6 <0.001 2.50 0.99-6.27 0.051
Immune deficiency        
 No 10 1      
 Yes 8.2 0.80 0.46-1.40 0.44    
Diabetes        
 No 6.7 1    1   
 Yes 17.4 1.57 0.86-2.85 0.14 0.98 0.44-2.14 0.95
Surgery        
 No 6.9 1    1   
 Yes 20.8 3.55 2.37-5.29 <0.001 1.06 0.61-1.85 0.83
Intravascular catheter        
 No 6.3 1    1   
 Yes 21.0 3.95 2.67-5.86 <0.001 1.75 1.0-3.1 0.048
Urinary catheter        
 No 5.5 1    1   
 Yes 50 17.32 11.03-27.2 <0.001 9.84 5.16-17.55 <0.001
Mechanical ventilation        
 No 9 1    1   
 Yes 71.4 25.35 7.82-82.2 <0.001 3.43 0.70-17.00 0.131
Antimicrobials        
 No 4.4     1   
 Yes 20.7 5.72 3.76-8.78 <0.001 5.69 3.37-9.61 <0.001
  1. * Odds Ratio.