Table 5.
Multilevel logistic regression models of transfer of passive immunity, treatment for disease, and mortality in calves assisted at birth and medicated with subcutaneous meloxicam (Metacam, 20 mg/ml, 0.5 mg/kg bodyweight, Boehringer Ingelheim, Ingelheim, Germany) or placebo (0.025 ml/kg) while adjusting for covariates and clustering by ranch
| Odds ratio | se | P value | Proportion of variance | ||
| Individual level | Ranch level | ||||
| Inadequate transfer of passive immunity (<24 g/l IgG) | >99 | <1 | |||
| Medication group | |||||
| Placebo | Referent | – | |||
| Meloxicam | 0.6 | 0.2 | 0.2 | ||
| Suckle reflex | |||||
| Strong | Referent | – | |||
| Weak | 0.5 | 0.2 | 0.05 | ||
| Treatment for disease | 46 | 54 | |||
| Medication group | |||||
| Placebo | Referent | – | |||
| Meloxicam | 1.7 | 1.0 | 0.4 | ||
| Tongue withdrawal reflex | |||||
| Complete | Referent | – | |||
| Incomplete | 5.8 | 3.9 | 0.009 | ||
| Mortality | 97.6 | 2.4 | |||
| Medication group | |||||
| Placebo | Referent | – | |||
| Meloxicam | 2.0 | 1.4 | 0.3 | ||
| Meconium staining | |||||
| No | Referent | – | |||
| Yes | 5.4 | 3.8 | 0.02 | ||
| Serum IgG concentration, g/l | 0.95 | 0.02 | 0.03 | ||