Table 6.
Final multivariable logistic regression model evaluating risk factors for association with diagnosis of at least one upper respiratory tract disorder in dogs attending primary-care veterinary practices in England. Breed type was the factor of primary interest
| Variable | Category | Odds ratio | 95 % CI | P-valuea |
|---|---|---|---|---|
| Breed type | West Highland White | Base | (< 0.001) | |
| Border Terrier | 1.4 | 0.6–2.9 | 0.409 | |
| Yorkshire Terrier | 2.2 | 1.1–4.5 | 0.026 | |
| Bulldog | 4.0 | 2.1–7.9 | < 0.001 | |
| French Bulldog | 5.1 | 2.6–10.2 | < 0.001 | |
| Pug | 6.9 | 3.6–13.3 | < 0.001 | |
| Bodyweight categories within extreme brachycephalic and moderate and non-brachycephalic categories | High | Base | (< 0.001) | |
| Mid | 1.3 | 0.8–2.1 | 0.324 | |
| Low | 1.8 | 1.1–2.9 | 0.020 | |
| No recorded bodyweight | 0.6 | 0.4–1.1 | 0.079 | |
| Insurance | Non-insured | Base | ||
| Insured | 1.9 | 1.3–2.8 | 0.002 |
aFor variables with >2 categories, the overall P-value is shown in brackets