TABLE 3.

Multivariate odds ratios (ORs) and 95% confidence intervals (95% CIs) of risk factors for canine transmissible venereal tumour (CTVT) occurrence in Grenada, West Indies

Risk factors	OR (95% CI)	p‐Value
Age	1.0 (0.9–1.0)	0.10
Breed
Purebred	Reference
Grenadian pothound	22.8 (10.3–50.4)	<0.001
Mixed‐breed	9.2 (4.1–20.7)	<0.001
Gonadectomy status
Intact	Reference
Neutered	2.2 (1.4–3.3)	<0.001

Note: Dogs with missing observations on any of the three variables (n = 469) were excluded from the analysis. The multivariate regression model included data from 98 CTVT dogs and 6613 Non‐CTVT dogs.