Table 3.
Sensitivity of sensor and frequency of calving difficulty. 0—eutocia; 1—prolonged expulsive phase with normal fetal presentation; 2—slight dystocia with fetal abnormal presentation, resolution by manual correction; 3—moderate dystocia, foeto-maternal disproportion; 4—severe dystocia such as uterine torsion and cervical stenosis.
| Categories | Number of Cattle per Category (n) | Relative Rate per Category (%) | Lower Bound of Frequencies (95%) | Upper Bound of Frequencies (95%) |
|---|---|---|---|---|
| Alarm | 63 | 86.30 | 78.41 | 94.20 |
| No alarm | 10 | 13.70 | 5.81 | 21.59 |
| Calving difficulty: | ||||
| Score 0 | 44 | 60.27 | 49.05 | 71.50 |
| Score 1 | 10 | 13.70 | 5.81 | 21.57 |
| Score 2 | 5 | 6.85 | 1.06 | 12.64 |
| Score 3 | 4 | 5.48 | 0.26 | 10.70 |
| Score 4 | 0 | 0 | 0 | 0 |