Table 5.

Results of the score statistics for type-3 Generalized Estimation Equations analysis to test the significance of herd, parity, physiological stage, cycle effects and sampling site on the sow contamination status determined by PCR assays and the infection status determined by serological assays.

Dependent variable	Independent variable
	Herd	Parity number	Physiological stage	Cycle	Sampling site
Mhp PCR-status	n.e.a	n.e.	n.e.	n.e.	0.63
App PCR-status	<0.001	0.77	n.e.	n.e.	<0.001
Pm PCR-status	<0.001	0.07	0.55	0.61	0.002
Hps PCR-status	<0.001	0.35	0.31	0.04	0.002
Ssuis PCR-status	<0.001	0.12	0.99	0.05	<0.001
Mhp serological status	0.03	0.79	0.18	0.26	–
App1-9-11 serological status	<0.001	0.005	0.19	0.11	–
App2 serological status	<0.001	0.002	0.29	0.41	–

Shaded values are significant at p < 0.05.

^aNot estimable.