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Table 2 Multivariate analysis of factors associated with SSI in 2016, Addis Ababa, Ethiopia

From: Prevalence and root causes of surgical site infections at an academic trauma and burn center in Ethiopia: a cross-sectional study

CharacteristicPatients with SSIPatients without SSIAOR (95% CI)P-value
Educational Status
 Illiterate20 (37%)34 (63%)1 
 Grade 1-8th19 (19.8)77 (80.2%)  
 Grade 9-12th17 (25%)51 (75%)  
 College/university5 (16.1%)26 (83.9%)0.1 (0.03–0.913)0.041
Pre-operative hospital stay
  < 2 h30 (19%)128 (81%)1 
 2-4 h15 (30.6%)34 (69.4%)  
  > 4 h16 (38.1%)26 (61.4%)6 (1.5–27.90)0.012
Post-operative hospital stay
  < 7 days34 (55.7%)169 (89.9%)1 
 7–14 days14 (23%)13 (6.9%)4.3 (1.11–16.10)0.035
  > 14 days13 (21.3%)6 (3.2%)5 (2.04–101.12)0.007
ASA score
 III4 (66.7%)2 (33.3%)1 
 II6 (14.3%)36 (85.7%)  
 I51 (25.4%)150 (74.6%)0.3 (0.07–1.26)0.026
Pre-morbid illness
 Diabetes Mellitus5 (62.5%)3 (37.5%)1 
 Hypertension3 (10.7%)25 (89.3%)0.03 (0.001–0.74)0.032
 HIV04 (100%)  
 No disease50 (25%)150 (75%)0.002 (0.00–0.13)0.003
Wound classification
 Clean0125 (100%)1 
 Clean-contaminated48 (43.6%)62 (56.4%)5 (4.80–93.95)< 0.001
 Contaminated7 (50%)7 (50%)6 (5.39–35.94)< 0.001