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Table 4 Final multivariable logistic regression analysis of variables significantly (P≤ 0

From: Antimicrobial resistance and virulence factors in Escherichia coli from swedish dairy calves

Variable β S.E.(β) ORa 95% CI (ORa) P-value
Intercept 1.24 0.57 - - -
Herd size      
0: ≥ 121 Refb - - - -
1: 55-120 -1.52 0.74 0.22 0.05; 0.93 0.04
2: < 55 -2.28 0.70 0.10 0.03; 0.40 0.001
Resistant to tetracycline?      
0:No Refb - - - -
1:Yes 1.66 0.64 5.25 1.48; 18.6 0.01
  1. aOR = Odds ratio
  2. bRef = reference category