Table 4 Intra operative factors associated with surgical site infection at Bugando medical centre
Variable | SSI | ||||
|---|---|---|---|---|---|
Yes n (%) N = 65 | No n (%) N = 185 | P value | OR | 95% CI | |
Nature of operation | |||||
Elective | 54 (83%) | 142 (76.7%) | 1 | ||
Emergency | 11 (17%) | 43 (23.3%) | 0.29 | 0.67 | 0.32-1.39 |
Type of anaesthesia | |||||
GA | 56 (86.1%) | 161 (87%) | 1 | ||
SAB | 9 (13.9%) | 24 (13%) | 0.86 | 1.07 | 0.47-2.46 |
Surgeon | |||||
Registrar | 7 (10.7%) | 32 (17.3%) | 1 | ||
Resident | 13 (20%) | 37 (20%) | 0.37 | 1.6 | 0.57-4.5 |
Specialist | 45 (69.2%) | 116 (62,7%) | 0.21 | 1.8 | 0.73-4.3 |
Use of drain | |||||
Yes | 26 (40%) | 28 (15.1%) | < 0.001 | 3.8 | 2.0-7.14 |
No | 39 (60%) | 157 (84.9%) | 1 | ||
Wound classification | |||||
Clean | 41(63%) | 152 (82%) | 1 | ||
Clean contaminated | 20 (30.7%) | 26 (14%) | 0.002 | 2.85 | 1.44-5.61 |
Contaminated | 4 (6.3%) | 7 (4%) | 0.25 | 2.12 | 0.59-7.59 |
Suture | |||||
Nylon | 44 (67.7%) | 118 (63.8%) | 1 | ||
Silk | 10 (15.4%) | 9 (4.9%) | 0.16 | 2.08 | 0.73-5.94 |
Vicryl | 11 (16.9%) | 57 (30.8%) | 0.01 | 0.33 | 0.13-0.77 |
Duration of operation | |||||
< 3 hours | 43 (66.1%) | 163 (88.1%) | 1 | ||
≥ 3 hours | 22 (33.9%) | 22 (11.9%) | < 0.001 | 3.8 | 1.92-7.48 |
Number of people in theatre | |||||
≤ 6 | 11 (16.9%) | 137 (74%) | 1 | ||
≥ 7 | 54 (83.1%) | 48 (26%) | < 0.001 | 14 | 6.77-29 |