TABLE 4.

Pedigree structure index Ψ

Breed	Sires (95% C.I.)	Dams (95% C.I.)
Akita Inu	0.10 (0.07–0.17)	0.13 (0.09–0.20)
Boxer	0.36 (0.33–0.40)	0.40 (0.38–0.43)
English bulldog	0.15 (0.12–0.19)	0.14 (0.12–0.17)
Chow chow	0.43 (0.36–0.50)	0.45 (0.39–0.53)
Rough collie	0.34 (0.29–0.40)	0.38 (0.34–0.42)
Golden retriever	0.37 (0.33–0.40)	0.43 (0.41–0.46)
Greyhound	0.40 (0.20–0.65)	0.34 (0.17–0.57)
German shepherd	0.41 (0.37–0.43)	0.35 (0.33–0.38)
Labrador retriever	0.22 (0.20–0.24)	0.33 (0.31–0.35)
English springer spaniel	0.55 (0.51–0.58)	0.28 (0.26–0.30)