a Individual animal level | ||||
BoHV-2 seropositive animals (n = 375) | BoHV-2 seronegative animals (n = 6426) | ORa(CI 95%) | p-value | |
North Bavaria | 8 | 1908 | 1.00 | – |
Lower Bavaria | 19 | 1051 | 4.31 (1.88–9.88) | < 0.001 |
Upper Bavaria | 56 | 1144 | 11.67 (5.55–24.58) | < 0.001 |
Swabia | 292 | 2323 | 29.98 (14.81–60.67) | < 0.001 |
b Farm level | ||||
BoHV-2 seropositive farmsb(n = 78) | BoHV-2 seronegative farmsc(n = 328) | ORa(CI 95%) | p-value | |
North Bavaria | 5 | 100 | 1.25 (0.29–5.40) | 0.764462 |
Lower Bavaria | 3 | 75 | 1.00 | – |
Upper Bavaria | 17 | 65 | 6.54 (1.83–23.32) | < 0.05 |
Swabia | 53 | 88 | 15.06 (4.52–50.15) | < 0.001 |