Table 4.

Logistic regression model defining the risk of a diagnosis of lymphoma in dogs in the VMDB (1964–2002) as a function of breed.

Breed	Case	Control	Odds Ratio	95% C.I.	P value
Mix Breed	3140	270503	1	*	*
Bullmastiff	51	1399	4.83	(3.62, 6.44)	<.0001
Boxer	675	14541	4.05	(3.71, 4.41)	<.0001
Bernese Mountain Dog	43	1301	3.64	(2.66, 4.96)	<.0001
Scottish Terrier	261	5647	3.39	(2.98, 3.86)	<.0001
Gordon Setter	50	1503	3.31	(2.48, 4.41)	<.0001
Irish Wolfhound	60	2135	3.23	(2.48, 4.20)	<.0001
Basset Hound	358	9945	3.22	(2.88, 3.60)	<.0001
Golden Retriever	1462	41705	3.12	(2.93, 3.32)	<.0001
Rottweiler	381	17174	2.71	(2.43, 3.02)	<.0001
Vizsla	55	2041	2.66	(2.02, 3.49)	<.0001
Bouvier des Flandres	42	1510	2.66	(1.94, 3.63)	<.0001
Old English Sheepdog	158	5988	2.48	(2.11, 2.92)	<.0001
Saint Bernard	176	9728	2.34	(2.01, 2.74)	<.0001
Pembroke Welsh Corgi	47	1845	2.08	(1.55, 2.79)	<.0001
Airedale Terrier	113	4778	1.92	(1.58, 2.32)	<.0001
Samoyed	45	7199	0.55	(0.41, 0.74)	<.0001
Brittany Spaniel	48	9116	0.48	(0.36, 0.64)	<.0001
Maltese	27	5240	0.42	(0.29, 0.62)	<.0001
Dutch Pug	24	5960	0.39	(0.26, 0.58)	<.0001
Yorkshire Terrier	57	13549	0.35	(0.27, 0.45)	<.0001
Poodle, Miniature	166	37939	0.29	(0.25, 0.34)	<.0001
Pomeranian	27	8982	0.28	(0.19, 0.41)	<.0001
Chihuahua	37	12522	0.28	(0.20, 0.38)	<.0001
Poodle, Toy	46	17326	0.20	(0.15, 0.27)	<.0001
Dachshund	68	26540	0.18	(0.15, 0.22)	<.0001
Pekingese	21	10389	0.18	(0.12, 0.28)	<.0001

*Baseline exposure; therefore coefficient and P values are not provided and OR is defined as 1.