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Table 1 Logistic regression analyses of the risk factors for isolation of E. coli in chicken

From: Identification and antimicrobial susceptibility profile of Escherichia coli isolated from backyard chicken in and around ambo, Central Ethiopia

Risk factor Category No. Examined No. Positive (%) Univariable Multivariable
OR (95% CI) P. value OR (95% CI) P. value
Breed Exotic 28 8 (28.6) 1.0  
Local 163 54 (33.1) 1.23 (0.51–2.99) 0.0635   
Age Young 72 17 (23.6) 1.0   1.0  
Adult 119 45 (37.8) 1.96 (1.02–3.79) 0.044 2.5 (1.22–5.11) 0.012
Sex Male 70 22 (31.4)     
Female 121 40 (33.1) 0.92 (0.49–1.74) 0.817
Season Dry 83 23 (27.7) 1.0    
Wet 108 39 (36.1) 0.68 (0.36–1.26) 0.220 0.74 (0.27–1.97) 0.550
District Guder & Ijaji 55 14 (25.5) 1.0   1.0  
Dire inchicni 40 11 (27.5) 1.11 (0.44–2.79) 0.823 2.1 (0.67–6.49) 0.200
Ambo 64 23 (35.9) 1.19 (0.74–3.63) 0.220 0.57 (0.43–3.27) 0.724
Holeta 32 14 (43.75) 2.28 (0.90–5.75) 0.081 2.22 (0.83–5.90) 0.110
Health status Healthy 95 22 (22.1) 1.0   
Sick 96 40 (42.7) 2.44 (1.31–4.57) 0.005 3.28 (1.54–6.96) 0.002
Diarrhoea Absent 113 29 (25.7) 1.0    
  78 33 (41.3) 2.12 (1.15–3.93) 0.017