Table 4. Prevalence results for the most frequent mid-level disorders recorded in dogs, purebreds only and crossbreds only that attended primary veterinary practices in England.

	Overall			Purebred		Crossbred
Mid-level disorder	No.	Preva%	95% CIb	Preva%	95% CIb	Preva%	95% CIb	P-value
Enteropathic	692	17.8	16.0–19.6	17.7	15.8–19.7	18.3	15.4–21.2	1.000
Dermatological	602	15.5	13.9–17.1	16.5	14.6–18.4	11.9	10.0–13.9	0.004
Musculoskeletal	457	11.8	10.6–12.9	11.2	9.8–12.6	14.1	11.8–16.3	0.130
Aural	426	11.0	9.8–12.2	12.0	10.7–13.3	7.2	5.3–9.0	0.001
Ophthalmological	406	10.5	9.1–11.8	11.1	9.7–12.6	7.9	6.1–9.7	0.032
Claw/nail	400	10.3	9.1–11.5	10.1	8.8–11.5	10.9	9.0–12.9	1.000
Dental	386	9.9	8.8–11.1	10.0	8.8–11.2	9.8	7.9–11.7	1.000
Neoplastic	367	9.5	8.2–10.7	9.6	8.2–10.9	9.2	7.2–11.1	1.000
Traumatic injury (not incl. bites)	351	9.0	8.0–10.1	9.1	7.8–10.3	8.9	6.6–11.2	1.000
Anal sac	337	8.7	7.5–9.8	8.6	7.3–9.9	9.0	7.1–11.0	1.000
Obesity	238	6.1	5.2–7.1	6.7	5.6–7.9	3.9	2.3–5.5	0.009
Mass lesion	235	6.1	5.2–6.9	6.4	5.3–7.4	4.9	3.4–6.4	0.726
Behavioural	233	6.0	5.3–6.85	5.8	4.9–6.7	6.9	5.1–8.7	1.000
Upper respiratory tract	223	5.7	4.9–6.5	5.6	4.6–6.6	6.4	4.6–8.2	1.000
Cardiac	219	5.6	4.8–6.5	5.9	5.0–6.7	4.9	3.1–6.7	1.000
Parasitic	172	4.4	3.8–5.1	4.2	3.5–5.0	5.3	3.7–6.8	1.000
Congenital	171	4.4	3.7–5.1	4.6	3.7–5.4	3.9	2.6–5.2	1.000
Bite injury	148	3.8	3.0–4.6	3.7	2.9–4.6	4.1	2.8–5.5	1.000
Urinary	126	3.2	2.7–3.8	3.4	2.7–4.1	2.8	1.6–3.9	1.000
Brain	122	3.1	2.5–3.7	3.2	2.6–3.8	3.1	1.9–4.4	1.000

P-values (Holm-adjusted) represent comparison between purebreds and crossbreds.

^aPrev prevalence.

^b95% CI 95% confidence interval.