Table 4 Latent classes of antimicrobial resistance in E. coli (n = 544) from pre-weaned dairy calves
Antimicrobial resistance class | TET | XNL+ | NAL+ | CIP + NAL + XNL+ |
|---|---|---|---|---|
Latent class prevalence | 30.8% | 19.9% | 26.1% | 23.5% |
Item response probabilities | ||||
 Ampicillin | 0.146 | 0.969 | 0.487 | 1.000 |
 Chloramphenicol | 0.420 | 0.770 | 0.992 | 0.915 |
 Ciprofloxacin | 0.006 | 0.000 | 0.066 | 0.982 |
 Nalidixic acid | 0.020 | 0.036 | 0.950 | 0.991 |
 Gentamicin | 0.000 | 0.243 | 0.535 | 0.633 |
 Kanamycin | 0.282 | 0.960 | 0.955 | 0.969 |
 Streptomycin | 0.279 | 0.888 | 0.978 | 0.966 |
 Sulfisoxazole | 0.587 | 1.000 | 1.000 | 1.000 |
 Trimethoprim/sulfamethoxazole | 0.082 | 0.915 | 0.969 | 1.000 |
 Tetracycline | 0.800 | 1.000 | 1.000 | 0.992 |
 Ceftiofur | 0.007 | 0.778 | 0.000 | 0.503 |