Table 1.
Estimates for mean herd-level and pat-level prevalence of Escherichia coli O157 for cattle farms sampled in Scotland and England & Wales between September 2014 and November 2015
| Analysis level | N | Estimate | s.e. | Mean prevalence* | 95% CI† |
|---|---|---|---|---|---|
| Herd | |||||
| Scotland | 110 | −1·174 | 0·225 | 0·236 | 0·166–0·325 |
| England & Wales | 160 | −1·310 | 0·193 | 0·213 | 0·156–0·283 |
| Pat | |||||
| Scotland | 2763 | −2·136 | 0·257 | 0·106 | 0·067–0·163 |
| England & Wales | 2913 | −2·598 | 0·241 | 0·069 | 0·044–0·107 |
CI, confidence interval.
*
1/[1 + EXP(−estimate)].
†
1/[1 + EXP(−estimate ± (1·96 × s.e.))].