Table 5.

Coefficients from final adjusted model of risk factors of severe injury.

	Adjusted OR (95% CI)	Adjusted p-value
Dog Age (per 1 year old)	1.21 (1.17, 1.25)	<0.001
Breed		<0.001
Border collie	1.70 (1.37, 2.09)
Mixed breed	0.84 (0.63, 1.13)
Shetland sheepdog	0.98 (0.67, 1.44)
Australian shephard	0.69 (0.46, 1.04)
Other	Reference
Growth plate x-rays		0.004
Not done	Reference
Done at least once	1.38 (1.11, 1.73)
Handler current age		0.003
18–24	Reference
25–34	0.93 (0.59, 1.48)
35–44	1.10 (0.69, 1.73)
45–54	1.01 (0.65, 1.58)
55–64	0.74 (0.47, 1.14)
65+	0.56 (0.34, 0.90)
Handler medical training/experience		0.012
None of these	Reference
Veterinarian	0.69 (0.40, 1.17)
Licensed vet tech	0.93 (0.53, 1.61)
Veterinary assistant	2.10 (1.30, 3.42)
Human health care professional	1.18 (0.92, 1.52)