Table 1.

Neurovirulence–phylogeny association analysis results

Statistic	Observed mean	Lower 95% CI	Upper 95% CI	Null mean	Lower 95% CI	Upper 95% CI	Significance
AI	1.6579	1.1240	2.2064	2.5287	2.0605	2.9795	0.0020
PS	10.1875	10.0000	11.0000	11.8886	11.3057	12.0000	0.0010
MC (neurovirulent)	2.0088	2.0000	2.0000	1.1065	1.0000	1.6895	0.0060
MC (non-neurovirulent)	82.7451	81.0000	83.0000	49.8731	27.6094	80.7979	0.0330