Resistance outcome | Covariates | Tmp-R positive (n=29) | Tmp-R negative (n=55) | B | SE (b) | Adjusted OR | 95% CI | P value* |

Trimethoprim-resistance (P=0.00109†) | Farm animal hospital (reference category) | 16 | 16 | − | − | − | − | 0.00324 |

Equine hospital | 8 | 12 | −0.29 | 0.62 | 0.75 | 0.22 to 2.51 | 0.639 | |

Small animal hospital | 5 | 27 | −2.13 | 0.74 | 0.12 | 0.02 to 0.45 | 0.00389 | |

Direct contact with animal faeces at work | 24 | 51 | −2.19 | 0.99 | 0.11 | 0.01 to 0.72 | 0.0208 | |

Hospitalisation in the last six months | 4 | 1 | 2.30 | 1.26 | 9.97 | 1.14 to 235.15 | 0.0371 |

If not specified, the reference category is the absence of the risk factor.

*P value from Wald test.

†P value from likelihood-ratio test statistic.