Table 4.

Multivariable binary logistic regression results for risk factors associated with environmental heat-related illness in dogs under primary veterinary care in the VetCompass programme.

Risk Factor	Category	Odds Ratio	95% CI	p-Value
Breed type	Labrador Retriever	Base		0.002
	Chow Chow	8.41	1.06–66.70	0.044
	Bulldog	7.52	2.76–20.47	<0.001
	Pug	3.30	1.16–9.41	0.025
	French Bulldog	3.16	1.03–9.73	0.045
	Cavalier King Charles Spaniel	2.38	0.85–6.69	0.100
	Boxer	2.22	0.60–8.19	0.233
	Other designer crossbred	1.33	0.36–5.01	0.67
	Jack Russell Terrier	1.29	0.52–3.17	0.583
	West Highland White Terrier	1.21	0.37–3.96	0.748
	Bichon Frise	1.08	0.23–5.00	0.923
	Labradoodle	1.06	0.13–8.38	0.958
	Beagle	0.95	0.12–7.48	0.958
	Staffordshire Bull Terrier	0.88	0.33–2.36	0.798
	Cocker Spaniel	0.88	0.27–2.85	0.829
	Chihuahua	0.71	0.19–2.65	0.612
	Yorkshire Terrier	0.70	0.19–2.59	0.594
	Other purebred	0.69	0.29–1.64	0.404
	German Shepherd Dog	0.69	0.15–3.18	0.629
	Border Terrier	0.67	0.09–5.28	0.703
	Golden Retriever	0.65	0.08–5.11	0.680
	Border Collie	0.58	0.13–2.70	0.490
	Lhasa Apso	0.55	0.07–4.34	0.571
	Cockapoo	0.50	0.06–4.01	0.515
	Non-designer Crossbred	0.50	0.22–1.16	0.105
	Shih-tzu	0.46	0.10–2.13	0.320
	English Springer Spaniel	0.00	~	0.965
	Miniature Schnauzer	0.00	~	0.977
	Rottweiler	0.00	~	0.979
	Pomeranian	0.00	~	0.981
	Lurcher	0.00	~	0.981
	Greyhound	0.00	~	0.981
	Siberian Husky	0.00	~	0.982
	Dogue de Bordeaux	0.00	~	0.987
	Missing	0.00	~	0.984
Age	<2 years	Base		0.081
	2– < 4 years	1.35	0.72–2.50	0.349
	4– < 6 years	1.09	0.53–2.24	0.821
	6– < 8 years	1.67	0.84–3.35	0.146
	8– < 10 years	1.81	0.88–3.73	0.110
	10– < 12 years	1.64	0.71–3.76	0.244
	≥12 years	3.15	1.56–6.37	0.001
	Unrecorded	0.00	~	0.973
Sex/neuter	Female-entire	Base		0.373
	Female-neutered	1.92	1.03–3.56	0.039
	Male-entire	1.87	1.05–3.33	0.033
	Male-neutered	1.72	0.93–3.21	0.086
	Unrecorded	0.00	~	0.984