Table 3 Spectinomycin resistance
Resistant isolates | Susceptible isolates | One-factorial log. Reg. | Multi-factorial log. Reg. | ||||||
|---|---|---|---|---|---|---|---|---|---|
n | % | n | % | OR | p | OR | p | ||
Time period | 2006–2011 (Ref.) | 618 | 39.09 | 963 | 60.91 | 1 | – | 1 | – |
2012–2017 | 308 | 27.87 | 797 | 72.13 | 0.60 | < 0.0001 | 0.62 | 0.003 | |
Age-group | Sow (Ref.) | 8 | 22.22 | 28 | 77.78 | 1 | – | 1 | – |
Piglet | 39 | 312 | 86 | 68.8 | 1.59 | 0.300 | 1.93 | 0.422 | |
Nursery | 206 | 32.09 | 436 | 67.91 | 1.65 | 0.220 | 1.76 | 0.489 | |
Fattening | 13 | 31.71 | 28 | 68.29 | 1.62 | 0.354 | 1.76 | 0.512 | |
Sampling site | GIT (Ref.) | 783 | 36.23 | 1378 | 63.77 | 1 | – | 1 | – |
GUT | 79 | 25.73 | 228 | 74.27 | 0.61 | 0.0003 | 1.220 | 0.8104 | |
others | 64 | 29.36 | 154 | 70.64 | 0.73 | 0.044 | 0.685 | 0.1871 | |