Table 4.
Final mixed‐effects univariable logistic regression results for risk factors associated with diagnosis of demodicosis in dogs aged >4 years under primary veterinary care in the UK
| Variable | Category | Cases | Total | Odds ratio | 95% CI | Category P‐value | Variable P‐value |
|---|---|---|---|---|---|---|---|
| Breed | Crossbreed | 14 | 51,888 | Base | <0.001 | ||
| Chinese shar‐pei | 4 | 693 | 21.91 | 7.16 to 67.00 | <0.001 | ||
| Shih Tzu | 23 | 5584 | 15.42 | 7.91 to 30.06 | <0.001 | ||
| West Highland White terrier | 19 | 8504 | 8.34 | 4.18 to 16.65 | <0.001 | ||
| Dogue de Bordeaux | 1 | 590 | 6.59 | 0.86 to 50.34 | 0.069 | ||
| Pug | 2 | 1364 | 5.42 | 1.23 to 23.90 | 0.026 | ||
| Boxer | 4 | 3798 | 3.90 | 1.28 to 11.86 | 0.017 | ||
| Border terrier | 3 | 3072 | 3.72 | 1.07 to 12.97 | 0.039 | ||
| British bulldog | 1 | 1150 | 3.29 | 0.43 to 25.09 | 0.251 | ||
| Golden retriever | 3 | 3755 | 2.88 | 0.83 to 10.06 | 0.097 | ||
| German Shepherd Dog | 5 | 6971 | 2.66 | 0.96 to 7.38 | 0.061 | ||
| Rottweiler | 2 | 2918 | 2.55 | 0.58 to 11.25 | 0.215 | ||
| Others | 16 | 44,373 | 1.31 | 0.64 to 2.68 | 0.465 | ||
| Yorkshire terrier | 3 | 8770 | 1.27 | 0.36 to 4.41 | 0.710 | ||
| Cavalier King Charles spaniel | 2 | 5878 | 1.25 | 0.28 to 5.49 | 0.770 | ||
| Lhasa apso | 1 | 3223 | 1.19 | 0.16 to 9.08 | 0.866 | ||
| Staffordshire bull terrier | 5 | 16,311 | 1.15 | 0.41 to 3.21 | 0.785 | ||
| Springer spaniel | 1 | 3445 | 1.15 | 0.15 to 8.78 | 0.891 | ||
| Cocker spaniel | 2 | 8055 | 0.90 | 0.21 to 3.98 | 0.893 | ||
| Labrador retriever | 4 | 19,095 | 0.77 | 0.25 to 2.34 | 0.643 | ||
| Jack Russell terrier | 2 | 16,210 | 0.46 | 0.10 to 2.01 | 0.299 | ||
| French bulldog | 0 | 295 | Zero cases | ~ | ~ | ||
| Border collie | 0 | 7195 | Zero cases | ~ | ~ | ||
| Chihuahua | 0 | 2839 | Zero cases | ~ | ~ | ||
| Bichon | 0 | 2825 | Zero cases | ~ | ~ | ||
| Purebred status | Crossbred | 14 | 51,888 | Base | 0.007 | ||
| Purebred | 103 | 176,249 | 2.16 | 1.23 to 3.77 | 0.007 | ||
| Adult bodyweight (>18 months) (kg) | <10.0 | 42 | 52,510 | Base | 0.012 | ||
| 10.0 to 19.9 | 28 | 56,566 | 0.62 | 0.38 to 1.00 | 0.051 | ||
| 20.0 to 29.9 | 13 | 44,580 | 0.37 | 0.20 to 0.68 | 0.002 | ||
| 30.0 to 39.9 | 10 | 31,484 | 0.40 | 0.20 to 0.80 | 0.009 | ||
| ≥ 40.0 | 11 | 17,624 | 0.79 | 0.40 to 1.53 | 0.478 | ||
| Unavailable | 13 | 26,037 | 0.60 | 0.31 to 1.11 | 0.101 |
CI Confidence interval
P‐values under 0.05 are shown in bold