Table 1.
Apparent and estimated true seropositivity to T. gondii for primiparous ewes mated as ewe lambs (approximately one-year-old at sampling) or yearlings (approximately two-years-old at sampling) and mature multiparous ewes (aged three-years-old or older) from 28 Australian farms
| Ewes sampled | |||||
|---|---|---|---|---|---|
| Flocks (n) | Individual ewes (n) | Seropositive samples (n) | Apparent seropositivity % (95% CI) |
Estimated true seropositivity % (95% CrI) |
|
| Primiparous ewes | |||||
| Ewe lambs | 19 | 839 | 7 | 0.8 (0.4, 1.6)a | 0.7 (0.1, 1.6) |
| Yearling | 11 | 440 | 7 | 1.6 (0.7, 3.1)a | 1.6 (0.4, 3.1) |
| Mature ewes | 28 | 558 | 45 | 8.1 (6.0, 10.5)b | 8.1 (5.8, 10.6) |
95% CI: 95% confidence interval
95% CrI: 95% credible interval
ab Apparent seropositivity proportion (%) with different superscripts are significantly different (two sample proportion z-test (2-tailed) P < 0.05)