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