Table 3.
Logistic regression output and obtained odds ratios for the prediction of the presence of a tool for automated estrus detection (AED), milk yield recording (AMYR), and mastitis detection (AMD) in the farms, as determined by the analysis of general farm information.
| Variable | β Estimate | SE | p-Value | Odds Ratio | 95% CI |
|---|---|---|---|---|---|
| Automated estrus detection (AED) | |||||
| (Intercept) | −3.48800 | 0.88260 | <0.001 | 0.0306 | 0.0052–0.1659 |
| Farmer’s age (class 1 to 5) | −0.15480 | 0.08805 | 0.079 | 0.8566 | 0.7198–1.0173 |
| Own farmland (ha) | 0.00539 | 0.00218 | 0.013 | 1.0054 | 1.0013–1.0099 |
| Herd size (no. of dairy cows) | 0.00423 | 0.00135 | 0.002 | 1.0042 | 1.0016–1.0070 |
| Herd average 305 day MY (kg/cow) | 0.00027 | 0.00008 | 0.001 | 1.0003 | 1.0001–1.0004 |
| Automated milk yield recording (AMYR) | |||||
| (Intercept) | −3.36500 | 0.82210 | <0.001 | 0.0346 | 0.0066–0.1672 |
| Land owned by farmers (ha) | 0.00505 | 0.00204 | 0.013 | 1.0051 | 1.0012–1.0093 |
| Herd size (no. of dairy cows) | 0.00526 | 0.00131 | <0.001 | 1.0053 | 1.0027–1.0079 |
| Herd average 305 day MY (kg/cow) | 0.00015 | 0.00008 | 0.081 | 1.0001 | 1.0000–1.0003 |
| Automated mastitis detection (AMD) | |||||
| (Intercept) | −1.68968 | 0.36779 | <0.001 | 0.1846 | 0.0879–0.3729 |
| Farmer’s age (classes 1 to 5) | −0.20208 | 0.09958 | 0.042 | 0.817 | 0.6718–0.9935 |
| Herd size (no. of dairy cows) | 0.00554 | 0.00089 | <0.001 | 1.0056 | 1.0039–1.0074 |
β = regression coefficient. SE = Standard Error. CI = Confidence Interval.