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

Table 4 Correlations between genetic, Euclidean and temporal binary distances and ownership computed with Partial Mantel test procedure (122 PRRSV ORF5 sequences)

Distance variable 1	Distance variable 2	Distance variable 3	r_M^a	P-value^b
Genetic^c	Euclidean^d	Ownership^e	0.04	<0.01
		Temporal^f	0.04	0.02
Genetic^c	Ownership^e	Euclidean^d	0.17	<0.01
		Temporal^f	0.17	<0.01
Genetic^c	Temporal^f	Euclidean^d	0.06	<0.01
		Ownership^e	0.05	<0.01

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

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