Correlation among genetic, Euclidean, temporal, and herd ownership distances of porcine reproductive and respiratory syndrome virus strains in Quebec, Canada

Table 3 Bivariate correlations between genetic, Euclidean and temporal distances and herd ownership computed with Mantel test procedure (122 PRRSV ORF5 sequences)

Distance variable 1	Distance variable 2	r_M^a	P-value^b
Genetic^c	Ownership^d	0.07	0.01
Genetic^c	Euclidean^c	−0.008	0.56
Genetic^c	Temporal^c	0.11	<0.01
Euclidean^c	Temporal^c	−0.009	0.58
Genetic^e	Ownership^d	0.17	<0.01
Genetic^e	Euclidean^f	0.04	<0.01
Genetic^e	Temporal^g	0.06	<0.01
Temporal^g	Euclidean^f	0.02	0.05
Temporal^g	Ownership^d	0.05	<0.01
Euclidean^f	Ownership^d	0.03	0.03

^a Mantel R test statistic using a Pearson correlation coefficient, ^b P-value obtained with 9999 Monte Carlo simulations, ^c Continuous distance, ^d 0: same, 1: different, ^e 0: ≥98%, 1: <98% homology, ^f 0: ≤5 km, 1: >5 km, ^g 0: ≤1 month, 1: >1 month.

ISSN: 1746-6148