Variables in model (model p value) | Direction dependent variable | Explanation | Odds ratio | Confidence interval (95 %) | p-value |
---|---|---|---|---|---|
Age heifers first calving (p = 0.0582) | Positive vs. Negative | 24-30 months vs. <24 months | 1.64 | 0.82, 3.29 | 0.1630 |
>30 months vs. <24 months | 3.46 | 1.15, 10.41 | 0.0269 | ||
>30 months vs. 24–30 months | 2.11 | 0.84, 5.31 | 0.1120 | ||
Sampling date (p = <.0001) | June vs. March | 1.05 | 0.90, 1.22 | 0.5482 | |
August vs. March | 1.53 | 1.28, 1.82 | <.0001 | ||
November vs. March | 2.74 | 2.16, 3.48 | <.0001 | ||
August vs. June | 1.46 | 1.24, 1.72 | <.0001 | ||
November vs. June | 2.62 | 2.08, 3.30 | <.0001 | ||
November vs. August | 1.80 | 1.49, 2.17 | <.0001 |