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Table 5 Logistic regression analysis between antimicrobial susceptibility of isolates and magnitude of antimicrobial usage with farm as random effect

From: Association between antimicrobial usage and resistance in Salmonella from poultry farms in Nigeria

Predictors Estimate ± SE p value
Intercept −0.4 0.9 0.66
 High reference   
 Low −2.8 1.3 0.03
Farm category
 Backyard reference   
 Large scale −0.5 1.5 0.73
 Medium scale 2.2 1.9 0.23
 Semi-commercial 1.9 1.6 0.13
 Small-scale 1.2 1.1 0.28
  1. Production type (broiler and layers) was excluded in the logistic regression analysis, due to lack of significance with antimicrobial susceptibility of isolates in the first step univariate analysis.