Model | IRR | 95% CI | P-value |
---|---|---|---|
a) Full dataset 1 | |||
Winter | --- | ---- | --- |
Spring | 0.97 | 0.85 – 1.11 | 0.61 |
Summer | 0.90 | 0.78 – 1.03 | 0.12 |
Fall | 0.89 | 0.78 – 1.03 | 0.11 |
2001 | --- | --- | --- |
2002 | 0.93 | 0.79 – 1.08 | 0.34 |
2003 | 0.99 | 0.85 – 1.16 | 0.93 |
2004 | 0.53 | 0.44 – 0.63 | <0.01 |
2005 | 0.45 | 0.38 – 0.54 | <0.01 |
2006 | 0.39 | 0.32 – 0.47 | <0.01 |
2007 | 0.32 | 0.26 – 0.40 | <0.01 |
Calves | --- | --- | --- |
Cows | 1.05 | 0.87 – 1.27 | 0.60 |
Heifers | 0.68 | 0.57 – 0.80 | <0.01 |
Steers | 0.75 | 0.66 – 0.85 | <0.01 |
b) Abattoirs open all weeks 2 | |||
Winter | --- | --- | --- |
Spring | 1.01 | 0.88 – 1.16 | 0.93 |
Summer | 0.92 | 0.80 – 1.05 | 0.22 |
Fall | 0.91 | 0.79 – 1.05 | 0.22 |
2001 | --- | --- | --- |
2002 | 0.94 | 0.80 – 1.11 | 0.50 |
2003 | 1.03 | 0.88 – 1.21 | 0.68 |
2004 | 0.57 | 0.48 – 0.68 | <0.01 |
2005 | 0.46 | 0.38 – 0.55 | <0.01 |
2006 | 0.40 | 0.38 – 0.49 | <0.01 |
2007 | 0.34 | 0.28 – 0.42 | <0.01 |
Calves | --- | --- | --- |
Cows | 1.03 | 0.84 – 1.26 | 0.75 |
Heifers | 0.73 | 0.62 – 0.87 | <0.01 |
Steers | 0.75 | 0.66 – 0.86 | <0.01 |
c) Multi-criteria 3 | |||
Winter | --- | --- | --- |
Spring | 1.08 | 0.92 – 1.28 | 0.33 |
Summer | 0.95 | 0.80 – 1.12 | 0.51 |
Fall | 0.92 | 0.78- 1.09 | 0.35 |
2001 | --- | --- | --- |
2002 | 1.03 | 0.84 – 1.27 | 0.76 |
2003 | 1.30 | 1.11 – 1.63 | <0.01 |
2004 | 1.04 | 0.85 – 1.28 | 0.72 |
2005 | 0.67 | 0.54 – 0.84 | <0.01 |
2006 | 0.67 | 0.49 – 0.79 | <0.01 |
2007 | 0.62 | 0.62 – 0.96 | <0.01 |
Calves | --- | --- | --- |
Cows | 0.77 | 0.62 – 0.96 | 0.02 |
Heifers | 0.62 | 0.51 – 0.75 | <0.01 |
Steers | 0.71 | 0.61 – 0.82 | <0.01 |
d) Large abattoirs 4 | |||
Winter | --- | --- | --- |
Spring | 0.97 | 0.82 – 1.15 | 0.74 |
Summer | 0.92 | 0.77 – 1.09 | 0.32 |
Fall | 0.99 | 0.84 – 1.18 | 0.94 |
2001 | --- | --- | --- |
2002 | 1.38 | 1.11 – 1.72 | <0.01 |
2003 | 1.56 | 1.26 – 1.93 | <0.01 |
2004 | 0.97 | 0.77 – 1.22 | 0.78 |
2005 | 0.75 | 0.59 – 0.94 | 0.01 |
2006 | 0.64 | 0.50 – 0.82 | <0.01 |
2007 | 0.64 | 0.50 – 0.82 | <0.01 |
Calves | --- | --- | --- |
Cows | 1.22 | 0.92 – 1.62 | 0.16 |
Heifers | 1.02 | 0.83 – 1.25 | 0.86 |
Steers | 0.87 | 0.74 – 1.03 | 0.10 |