Table 2.
Final mixed‐effects breed‐multivariable logistic regression results for risk factors associated with diagnosis of demodicosis in dogs aged <2 years under primary veterinary care in the UK
| Variable | Category | Cases | Total | Odds ratio | 95% CI | Category P‐value | Variable P‐value |
|---|---|---|---|---|---|---|---|
| Breed | Crossbreed | 132 | 35,592 | Base | <0.001 | ||
| British bulldog | 47 | 1321 | 11.26 | 7.94 to 15.97 | <0.001 | ||
| Staffordshire bull terrier | 191 | 8937 | 7.11 | 5.65 to 8.93 | <0.001 | ||
| Chinese shar‐pei | 14 | 764 | 6.57 | 3.73 to 11.60 | <0.001 | ||
| Dogue de Bordeaux | 13 | 733 | 5.92 | 3.30 to 10.62 | <0.001 | ||
| Pug | 50 | 2616 | 5.41 | 3.87 to 7.55 | <0.001 | ||
| French bulldog | 30 | 1594 | 5.07 | 3.37 to 7.63 | <0.001 | ||
| Boxer | 9 | 1270 | 2.04 | 1.03 to 4.04 | 0.040 | ||
| Rottweiler | 5 | 1351 | 1.16 | 0.47 to 2.85 | 0.743 | ||
| Border terrier | 5 | 1220 | 1.10 | 0.45 to 2.70 | 0.838 | ||
| Cocker spaniel | 13 | 4252 | 0.78 | 0.44 to 1.38 | 0.394 | ||
| Border collie | 7 | 2715 | 0.70 | 0.32 to 1.50 | 0.354 | ||
| Others | 48 | 22,931 | 0.60 | 0.43 to 0.84 | 0.046 | ||
| Jack Russell terrier | 10 | 5730 | 0.53 | 0.28 to 1.00 | 0.050 | ||
| Springer spaniel | 3 | 1580 | 0.51 | 0.16 to 1.61 | 0.254 | ||
| Chihuahua | 9 | 5725 | 0.48 | 0.24 to 0.94 | 0.032 | ||
| Shih Tzu | 9 | 5535 | 0.44 | 0.22 to 0.87 | 0.018 | ||
| German shepherd dog | 4 | 2951 | 0.42 | 0.15 to 1.13 | 0.018 | ||
| Labrador retriever | 9 | 7384 | 0.32 | 0.16 to 0.64 | 0.001 | ||
| Cavalier King Charles spaniel | 2 | 2077 | 0.26 | 0.07 to 1.07 | 0.062 | ||
| West Highland White terrier | 1 | 1710 | 0.17 | 0.02 to 1.12 | 0.065 | ||
| Bichon | 1 | 2036 | 0.13 | 0.02 to 0.96 | 0.046 | ||
| Lhasa apso | 1 | 1970 | 0.13 | 0.02 to 0.97 | 0.046 | ||
| Golden retriever | 0 | 994 | Zero cases | ~ | ~ | ||
| Yorkshire terrier | 0 | 3435 | Zero cases | ~ | ~ | ||
| Bodyweight relative to breed/sex mean | Lower | 160 | 33,771 | Base | – | <0.001 | |
| Equal/Higher | 130 | 16,774 | 1.50 | 1.18 to 1.91 | 0.001 | ||
| Unavailable | 323 | 75,878 | 0.54 | 0.44 to 0.67 | <0.001 | ||
| Age (years) | <1.0 years | 533 | 61,988 | Base | – | <0.001 | |
| 1.0 to <2.0 years | 80 | 64,435 | 0.12 | 0.09 to 0.15 | <0.001 | ||
| Sex‐neuter | Female‐entire | 170 | 35,609 | Base | – | <0.001 | |
| Female‐neutered | 96 | 16,456 | 1.44 | 1.10 to 1.90 | 0.008 | ||
| Male‐entire | 156 | 36,749 | 0.87 | 0.70 to 1.08 | 0.216 | ||
| Male‐neutered | 107 | 20,708 | 1.32 | 1.01 to 1.71 | 0.039 | ||
| Unavailable | 84 | 16,901 | 1.45 | 1.07 to 1.96 | 0.016 |
CI Confidence interval
P‐values under 0.05 are shown in bold
n=126,423