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Table 5 Univariate and multivariate analysis (n = 223)

From: Viral and bacterial upper respiratory tract infection in hospital health care workers over time and association with symptoms

Variable Bacterial colonisation Rate OR (95% CI) AOR (95% CI) P value
CRI
 Yes 12/12 100 3.72 (0.19 to 72.55) 3.64 (0.22 to 60.36) 0.367
 No 184/211 87.2 Ref Ref  
Gender
 Male 26/35 74.3 0.31 (0.12 to 0.75) 0.33 (0.11 to 1.01) 0.052
 Female 170/188 90.4 Ref Ref  
Age    0.97 (0.93 to 1.02) 0.98 (0.93 to 1.03) 0.549
Profession
 Doctor 89/104 85.6 0.66 (0.30 to 1.49) 0.92 (0.32 to 2.59) 0.869
 Nurses 107/119 89.9 Ref Ref  
Smoking status
 Current/ex-smoker 8/11 72.7 0.34 (0.08 to 1.37) 0.54 (0.12 to 2.42) 0.418
 Never 188/212 88.7 Ref Ref  
Influenza vaccine
 Yes 42/48 87.5 0.95 (0.36 to 2.52) 0.69 (0.26 to 1.86) 0.463
 No 154/175 88    
Medical conditionsa
 Yes 25/29 86.2 0.84 (0.27 to 2.63) 0.77 (0.24 to 2.46) 0.664
 No 171/194 88.1 Ref Ref  
High risk proceduresb
 Yes 124/143 86.7 0.72 (0.30 to 1.74) 0.72 (0.26 to 2.01) 0.528
 No 72/80 88.9 Ref Ref  
Mask use
 Yes 172/196 87.8 0.90 (0.25 to 3.20) 0.83 (0.24 to 2.82) 0.765
 No 24/27 88.9 Ref Ref  
Ward
 Respiratory 81/99 81.8 Ref Ref  
 Paediatric 44/47 93.6 3.26 (0.91 to 11.68) 2.72 (0.78 to 9.47) 0.117
 Fever clinics 29/31 93.5 3.22 (0.70 to 14.75) 2.62 (0.56 to 12.24) 0.221
 Emerg/ICUc 42/46 91.3 2.33 (0.74 to 7.38) 2.52 (0.77 to 8.24) 0.126
  1. Bold shows significant result
  2. aInclude asthma, diabetes, immunosuppression and other
  3. bInclude suctioning of airways, endotracheal intubation, sputum induction, chest, physiotherapy bronchoscopy
  4. c45 cases in emergency and 1 in intensive medication unit