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Table 4 Univariate analysis of intraoperative risk factors for surgical site infection (SSI) among patients who underwent caesarean sections

From: Incidence and predictors of surgical site infections following caesarean sections at Bugando Medical Centre, Mwanza, Tanzania

  Surgical site infection (SSI)   
Predictive factors Yes n (%) No n (%) HR (95% CI) p - value
Wound class     
 Clean or clean-contaminated 12 (5.9) 190 (94.1) 1.0  
 Contaminated or dirty 22 (15.4) 121 (84.6) 2.7 (1.4-5.5) 0.005
Type of anaesthesia used     
 Regional 32 (9.7) 298 (90.30 1.0  
 General 2 (13.3) 13 (86.7) 1.5 (0.4-6.5) 0.551
Type of skin incision     
 Transverse 3 (3.5) 83 (96.5) 1.0  
 Vertical 31 (12.0) 228 (88.0) 3.6 (1.1-11.8) 0.034
Duration of procedure in mins     
 ≤60 24 (8.3) 265 (91.7) 1.0  
 >60 10 (17.9) 46 (82.1) 2.4 (1.1-5.0) 0.020
Type of surgeon     
 Senior* 26 (8.4) 282 (91.6) 1.0  
 Junior** 8 (21.6) 29 (78.4) 2.8 (1.3-6.1) 0.012
Number of people in theatre     
 ≤5 8 (13.8) 50 (86.2) 1.0  
 >5 26 (9.1) 260 (90.9) 0.7 (0.3- 1.4) 0.289
Estimated blood loss in mls     
 ≤500 25 (9.3) 245 (90.7) 1.0  
 >500 9 (12.0) 66 (88.0) 1.4 (0.6-2.9) 0.436
Antibiotic used     
 Non-ampicillin regimen 14 (8.2) 156 (91.8) 1.0  
 Ampicillin regimen 20 (11.5) 154 (88.5) 1.4 (0.7- 2.8) 0.304
Duration of antibiotic course     
 Single dose 7 (8.5) 75 (91.5) 0.8 (0.4-1.8) 0.608
 Multiple doses 27 (10.3) 235 (89.7) 1.0  
  1. Abbreviations: HR hazard ratio, CI confidence interval.
  2. *Senior doctor included postgraduate student, registered medical doctor and specialist.
  3. **Junior surgeon defined an intern doctor.