Table 3 Prevalence of the most common disorders at a fine-level of diagnostic precision recorded in Chihuahuas (n = 5660) under primary veterinary care at UK practices participating in the VetCompass™ Programme from January 1st to December 31st, 2016. The P-value reflects prevalence comparison between females and males. *CI confidence interval
Fine-level disorder | Count | Overall prevalence % | 95% CI* | Female prevalence % | Male prevalence % | P-Value | Median age (years) |
|---|---|---|---|---|---|---|---|
Periodontal disease | 762 | 13.5 | 12.6–14.4 | 13.3 | 13.7 | 0.650 | 5.2 |
Obesity | 333 | 5.9 | 5.3–6.5 | 6.3 | 5.6 | 0.264 | 4.4 |
Retained deciduous dentition | 324 | 5.7 | 5.1–6.4 | 5.4 | 6.1 | 0.269 | 1.6 |
Anal sac impaction | 280 | 4.9 | 4.4–5.5 | 4.9 | 5.1 | 0.728 | 3.8 |
Aggression | 238 | 4.2 | 3.7–4.8 | 3.5 | 4.9 | 0.008 | 3.5 |
Patellar luxation | 224 | 4.0 | 3.5–4.5 | 4.2 | 3.7 | 0.345 | 2.9 |
Cryptorchidism (males only) | 110 | 3.9 | 3.2–4.6 | ~ | ~ | ~ | 1.6 |
Overgrown nail(s) | 187 | 3.3 | 2.9–3.8 | 3.6 | 3.1 | 0.279 | 3.7 |
Flea infestation | 162 | 2.9 | 2.4–3.3 | 2.8 | 3.0 | 0.596 | 2.9 |
Heart murmur | 115 | 2.0 | 1.7–2.4 | 1.3 | 2.8 | <  0.001 | 8.9 |
Anal sac infection | 100 | 1.8 | 1.4–2.1 | 1.4 | 2.1 | 0.053 | 4.1 |
Undesirable behaviour | 83 | 1.5 | 1.2–1.8 | 1.4 | 1.6 | 0.485 | 2.5 |
Diarrhoea | 76 | 1.3 | 1.1–1.7 | 1.1 | 1.5 | 0.189 | 2.2 |
Otitis externa | 74 | 1.3 | 1.0–1.6 | 0.9 | 1.7 | 0.012 | 4.0 |
Lameness | 63 | 1.1 | 0.9–1.4 | 1.0 | 1.2 | 0.571 | 2.5 |
Gastroenteritis | 61 | 1.1 | 0.8–1.4 | 1.1 | 1.1 | 0.949 | 1.9 |
Vomiting | 61 | 1.1 | 0.8–1.4 | 1.1 | 1.1 | 0.949 | 2.1 |
Dystocia (females only) | 31 | 1.1 | 0.8–1.6 | ~ | ~ | ~ | 2.8 |
Pruritus | 46 | 0.8 | 0.6–1.1 | 0.8 | 0.8 | 0.955 | 3.0 |
Corneal ulceration | 46 | 0.8 | 0.6–1.1 | 0.9 | 0.7 | 0.516 | 3.4 |
Conjunctivitis | 43 | 0.8 | 0.6–1.0 | 0.4 | 1.1 | 0.004 | 1.7 |
Claw injury | 39 | 0.7 | 0.5–0.9 | 0.6 | 0.7 | 0.667 | 3.1 |
Infectious canine tracheobronchitis | 36 | 0.6 | 0.4–0.9 | 0.5 | 0.8 | 0.105 | 2.1 |
Upper respiratory tract infection | 36 | 0.6 | 0.4–0.9 | 0.4 | 0.9 | 0.009 | 3.2 |
Dental disease | 35 | 0.6 | 0.4–0.9 | 0.6 | 0.6 | 0.904 | 4.2 |
Alopecia | 33 | 0.6 | 0.4–0.9 | 0.5 | 0.6 | 0.634 | 1.5 |
Melaena | 33 | 0.6 | 0.4–0.9 | 0.5 | 0.6 | 0.634 | 2.7 |
Spinal pain | 31 | 0.6 | 0.4–0.8 | 0.4 | 0.7 | 0.115 | 5.5 |