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Table 2 Prevalence of E. coli and associated risk factors

From: Bacteriological study of calf colisepticemia in Alage Dairy Farm, Southern Ethiopia

Risk factors N Positive % Positive 95% CI P value
Age
 < 30 days 24 5 20.8 (17.3–21.07)  
 30–90 days 23 1 4.54 (3.45–6.13) 0.021
 Total 27 0 0.00 (0.00)  
 > 90 days 74 6 8.11 (5.31–9.32)  
Breed
 Holstein Frisian 56 5 8.93 (7.88–11.09)  
 Borena 18 1 5.56 (6.14–8.54) 0.511
 Total 74 6 8.11 (9.46–11.86)  
Parity of the dam
 One or two 19 5 26.3 (21.45–29.71)  
 Three 30 1 3.33 (1.07–5.91) 0.023
 Above three 25 0 0.00 (0.00)  
 Total 74 6 8.11 (4.98–10.88)  
Sex
 Male 9 1 11.11 (12.31–15.31)  
 Female 65 5 7.69 (7.99–11.03) 0.601
 Total 74 6 8.11 (9.35–11.61)  
Faecal consistency
 Diarrheic 9 3 33.33 (30.11–36.13) 0.016
 Non diarrheic 65 3 4.62 (2.93–5.32)  
 Total 74 6 8.11 (7.33–10.89)