Table 5.

Regression coefficients (describing trend) and statistical significance of the trend (^nsP > 0.05; ^*P < 0.05, ^**P < 0.01, ^***P < 0.001) of the median, mean, standard deviation and 75th percentile of hip score of sires and dams of dogs born per year regressed on year of birth.

		LR		GR		GSD		ROTT		BMD		NEWF
Median score	Sires	−0.0079	ns	−0.0271	ns	0.0099	ns	−0.0404	**	−0.0182	ns	−0.1089	**
	Dams	−0.0133	ns	−0.0099	ns	0.0502	*	0.0138	ns	0.0219	ns	−0.2815	***
Mean score	Sires	−0.1014	***	−0.0930	***	−0.0719	**	−0.0560	**	−0.0501	ns	−0.3393	***
	Dams	−0.1037	***	−0.0660	ns	−0.0468	***	0.0174	ns	−0.0539	ns	−0.3354	***
sd score	Sires	−0.2242	***	−0.1913	***	−0.2521	***	−0.1510	***	−0.0950	ns	−0.4262	**
	Dams	−0.2110	***	−0.1595	***	−0.1880	***	0.0493	*	−0.1141	ns	−0.1853	*
75th pc score	Sires	−0.0773	*	−0.1025	*	−0.0853	*	−0.0520	*	−0.0557	ns	−0.6063	***
	Dams	−0.0537	ns	−0.0729	ns	−0.0390	ns	−0.0100	ns	−0.0766	ns	−0.6318	***

Negative regression coefficients indicate at declining trend, and positive an increasing trend.