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Table 1 Prevalence of Escherichia coli based on fecal consistency and age in pre-weaned calves (n= 689) in the Republic of Korea

From: Characterization of virulence genes in Escherichia coli strains isolated from pre-weaned calves in the Republic of Korea

Variables

No. (%) of E. coli-positive samples

No. (%) of E. coli-negative samples

Total

χ2 (P value)

Fecal consistency

 Diarrheic

178 (54.1%)

151 (45.9%)

329

0.651 (0.420)

 Normal

210 (58.3%)

150 (41.7%)

360

Age (days)

 1–20

156 (46.3%)

181 (53.7%)

337

26.205 (< 0.001)

 21–40

145 (66.5%)

73 (33.5%)

218

 41–60

87 (64.9%)

47 (35.1%)

134

Fecal consistency × age

   

4.746 (0.093)