From: Impact of litter size on sow stayability in Swedish commercial piglet producing herds
Explanatory variable | OR | P value | 95 % Conf. interval | |
---|---|---|---|---|
Categories | ||||
Exposure groupa | ||||
S1S2 | 0.75 | 0.000 | 0.68 | 0.82 |
S1M2 | 0.98 | 0.683 | 0.89 | 1.08 |
S1L2 | 0.89 | 0.025 | 0.80 | 0.99 |
M1S2 | 0.86 | 0.002 | 0.78 | 0.94 |
M1M2 | Ref. | |||
M1L2 | 0.89 | 0.012 | 0.81 | 0.98 |
L1S2 | 0.71 | 0.000 | 0.62 | 0.81 |
L1M2 | 0.82 | 0.000 | 0.73 | 0.91 |
L1L2 | 0.84 | 0.001 | 0.77 | 0.93 |
Birth year of the sow | ||||
≤2002 | Ref. | |||
2003–2006 | 0.78 | 0.000 | 0.73 | 0.83 |
2007–2008 | 0.69 | 0.000 | 0.64 | 0.75 |
2009 | 0.68 | 0.000 | 0.62 | 0.74 |
Age (days) at first farrowing | ||||
≤347 | Ref. | |||
348–363 | 1.00 | 1.000 | 0.93 | 1.07 |
364–384 | 0.95 | 0.141 | 0.88 | 1.02 |
≥385 | 0.87 | 0.000 | 0.81 | 0.94 |