Aspects of bovine herpesvirus-1 infection in dairy and beef herds in the Republic of Ireland

Table 5 Chi-squared testing of herd-level bovine herpesvirus-1 (BHV-1) seroprevalence (into quartiles) by herd size (in quartiles), in 1052 Irish study herds during 2009

Herd-level BHV-1 seroprevalence	Herd size				Total
	Lowest quartile	Second quartile	Third quartile	Highest quartile
Lowest quartile	98^a	58	52	54	262
Second quartile	72	85	64	46	267
Third quartile	67	61	75	60	263
Highest quartile	55	43	64	98	260

Pearson Chi-square (9) = 57.1295, P < 0.001
a. That is, there were 98 herds with herd-level BHV-1 seroprevalence in the lowest quartile and herd size in the lowest quartile

ISSN: 1751-0147