Table 1. Summary numerical values of B. hyodysenteriae isolates and STs on a country and global level.

Level of discrimination	IA (p-value)	mean dN/dS	mean% GC	DI
Global isolates	1.11 (p<0.0001)	0.091	34.89	0.920
Global STs	0.40 (p<0.0001)	n/a	34.87	n/a
North American isolates	2.55 (p<0.0001)	0.062	34.86	0.897
North American STs	0.30 (p = 0.0050)	n/a	34.88	n/a
Australian isolates	1.34 (p<0.0001)	0.108	34.84	0.977
Australian STs	1.07 (p<0.0001)	n/a	34.84	n/a
Spanish and Portuguese isolates	2.95 (p<0.0001)	0.087	34.88	0.758
Spanish and Portuguese STs	0.55 (p = 0.0280)	n/a	34.88	n/a
Italian isolates	3.01 (p<0.0001)	0.104	34.94	0.900
Italian STs	1.06 (p<0.0001)	n/a	34.91	n/a

n/a: not applicable.

Abbreviations: I_A Index of association values; mean dN/dS mean ratio of non-synonymous to synonymous substitutions; DI Simpson's Index of Diversity; ST Sequence Type.